diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-10.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-10.c
new file mode 100644
index 00000000000..5faee21f9b9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-10.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-11.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-11.c
new file mode 100644
index 00000000000..b8917a7f917
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-11.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 64);
+}
+
+/* { dg-final { scan-assembler-times "movdqu\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c
new file mode 100644
index 00000000000..f1432ebe517
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-12.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 64);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-13.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-13.c
new file mode 100644
index 00000000000..97e6067fec9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-13.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 66);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu64\[ \\t\]+\[^\n\]*%zmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-14.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-14.c
new file mode 100644
index 00000000000..7addc4c0a28
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-14.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 33);
+}
+
+/* { dg-final { scan-assembler-times "movdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c
new file mode 100644
index 00000000000..695e8c3fa67
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-15.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-16.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-16.c
new file mode 100644
index 00000000000..b0643d05ee7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-16.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst, *src;
+
+void
+foo (void)
+{
+  __builtin_memcpy (dst, src, 34);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-7.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-7.c
new file mode 100644
index 00000000000..3d248d447ea
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-7.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+void
+foo (int a1, int a2, int a3, int a4, int a5, int a6, char *dst, char *src)
+{
+  __builtin_memcpy (dst, src, 17);
+}
+
+/* { dg-final { scan-assembler-times "movdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-8.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-8.c
new file mode 100644
index 00000000000..c13a2beb2f0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-8.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
+
+void
+foo (int a1, int a2, int a3, int a4, int a5, int a6, char *dst, char *src)
+{
+  __builtin_memcpy (dst, src, 18);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memcpy-9.c b/gcc/testsuite/gcc.target/i386/pieces-memcpy-9.c
new file mode 100644
index 00000000000..238f88b275e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memcpy-9.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+void
+foo (int a1, int a2, int a3, int a4, int a5, int a6, char *dst, char *src)
+{
+  __builtin_memcpy (dst, src, 19);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-1.c b/gcc/testsuite/gcc.target/i386/pieces-memset-1.c
new file mode 100644
index 00000000000..2b8032684b3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-1.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 64);
+}
+
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-10.c b/gcc/testsuite/gcc.target/i386/pieces-memset-10.c
new file mode 100644
index 00000000000..a6390d1bd8f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-10.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 64);
+}
+
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-11.c b/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
new file mode 100644
index 00000000000..3fb9038b04f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-11.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 64);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-12.c b/gcc/testsuite/gcc.target/i386/pieces-memset-12.c
new file mode 100644
index 00000000000..fa834566097
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-12.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 66);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu64\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-13.c b/gcc/testsuite/gcc.target/i386/pieces-memset-13.c
new file mode 100644
index 00000000000..7f2cd3f58ec
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-13.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 33);
+}
+
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-14.c b/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
new file mode 100644
index 00000000000..45ece482464
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-14.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-15.c b/gcc/testsuite/gcc.target/i386/pieces-memset-15.c
new file mode 100644
index 00000000000..bddf47d728e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-15.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-16.c b/gcc/testsuite/gcc.target/i386/pieces-memset-16.c
new file mode 100644
index 00000000000..1c5d124cecc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-16.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 17);
+}
+
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-17.c b/gcc/testsuite/gcc.target/i386/pieces-memset-17.c
new file mode 100644
index 00000000000..6cdb33557c0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-17.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 17);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-18.c b/gcc/testsuite/gcc.target/i386/pieces-memset-18.c
new file mode 100644
index 00000000000..adbd201b4e7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-18.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 3, 18);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-19.c b/gcc/testsuite/gcc.target/i386/pieces-memset-19.c
new file mode 100644
index 00000000000..7e9cf2e26d8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-19.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 64);
+}
+
+/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-2.c b/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
new file mode 100644
index 00000000000..649f344e8f6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-2.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 64);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-20.c b/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
new file mode 100644
index 00000000000..b8747e669e8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-20.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 64);
+}
+
+/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-21.c b/gcc/testsuite/gcc.target/i386/pieces-memset-21.c
new file mode 100644
index 00000000000..4f001c6d06c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-21.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 66);
+}
+
+/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu64\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-22.c b/gcc/testsuite/gcc.target/i386/pieces-memset-22.c
new file mode 100644
index 00000000000..5f3c454ef8f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-22.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 33);
+}
+
+/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-23.c b/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
new file mode 100644
index 00000000000..a3b4ffc18e0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-23.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 33);
+}
+
+/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-24.c b/gcc/testsuite/gcc.target/i386/pieces-memset-24.c
new file mode 100644
index 00000000000..e222787b541
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-24.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 33);
+}
+
+/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-25.c b/gcc/testsuite/gcc.target/i386/pieces-memset-25.c
new file mode 100644
index 00000000000..195ddb635eb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-25.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 17);
+}
+
+/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-26.c b/gcc/testsuite/gcc.target/i386/pieces-memset-26.c
new file mode 100644
index 00000000000..13606b2da54
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-26.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 17);
+}
+
+/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-27.c b/gcc/testsuite/gcc.target/i386/pieces-memset-27.c
new file mode 100644
index 00000000000..54a672b6015
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-27.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 17);
+}
+
+/* { dg-final { scan-assembler-times "pxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-28.c b/gcc/testsuite/gcc.target/i386/pieces-memset-28.c
new file mode 100644
index 00000000000..83c2d3f0fde
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-28.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 64);
+}
+
+/* { dg-final { scan-assembler-times "pcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-29.c b/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
new file mode 100644
index 00000000000..650e6fe66a5
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-29.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 64);
+}
+
+/* { dg-final { scan-assembler-not "vpcmpeqd\[ \\t\]+\[^\n\]*%ymm" } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-3.c b/gcc/testsuite/gcc.target/i386/pieces-memset-3.c
new file mode 100644
index 00000000000..2aed6dbc68e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-3.c
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512bw -mno-avx512vl -mavx512f -mtune=intel" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 66);
+}
+
+/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* { dg-final { scan-assembler-times "vinserti64x4\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu64\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" { target { ! ia32 } } } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-30.c b/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
new file mode 100644
index 00000000000..dcec2c700fc
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-30.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 64);
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-31.c b/gcc/testsuite/gcc.target/i386/pieces-memset-31.c
new file mode 100644
index 00000000000..5d20af0938d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-31.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 66);
+}
+
+/* { dg-final { scan-assembler-times "vpternlogd\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu64\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-32.c b/gcc/testsuite/gcc.target/i386/pieces-memset-32.c
new file mode 100644
index 00000000000..c5ca0bd17ba
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-32.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 33);
+}
+
+/* { dg-final { scan-assembler-times "pcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-33.c b/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
new file mode 100644
index 00000000000..a87d1b80ae6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-33.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 33);
+}
+
+/* { dg-final { scan-assembler-not "vpcmpeqd\[ \\t\]+\[^\n\]*%ymm" } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-34.c b/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
new file mode 100644
index 00000000000..0c2f1ee6049
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-34.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 33);
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-35.c b/gcc/testsuite/gcc.target/i386/pieces-memset-35.c
new file mode 100644
index 00000000000..b0f4a8b898e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-35.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 34);
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-36.c b/gcc/testsuite/gcc.target/i386/pieces-memset-36.c
new file mode 100644
index 00000000000..d1f1263c7b2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-36.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 17);
+}
+
+/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-37.c b/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
new file mode 100644
index 00000000000..ec59497b116
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-37.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=generic" } */
+
+void
+foo (int a1, int a2, int a3, int a4, int a5, int a6, int x, char *dst)
+{
+  __builtin_memset (dst, x, 66);
+}
+
+/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-38.c b/gcc/testsuite/gcc.target/i386/pieces-memset-38.c
new file mode 100644
index 00000000000..ed4a24a54fd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-38.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=sandybridge" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 33);
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-39.c b/gcc/testsuite/gcc.target/i386/pieces-memset-39.c
new file mode 100644
index 00000000000..a330bff5f3f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-39.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512bw -mtune=generic" } */
+
+void
+foo (int a1, int a2, int a3, int a4, int a5, int a6, int x, char *dst)
+{
+  __builtin_memset (dst, x, 66);
+}
+
+/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* { dg-final { scan-assembler-not "vinserti64x4" } } */
+/* { dg-final { scan-assembler-times "vmovdqu64\[ \\t\]+\[^\n\]*%zmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-4.c b/gcc/testsuite/gcc.target/i386/pieces-memset-4.c
new file mode 100644
index 00000000000..9256919bfdf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-4.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 33);
+}
+
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-40.c b/gcc/testsuite/gcc.target/i386/pieces-memset-40.c
new file mode 100644
index 00000000000..4eda73ead59
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-40.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx512f -mavx2 -mtune=sandybridge" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 66);
+}
+
+/* { dg-final { scan-assembler-times "vpbroadcastb\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 4 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-41.c b/gcc/testsuite/gcc.target/i386/pieces-memset-41.c
new file mode 100644
index 00000000000..f86b6986da9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-41.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-42.c b/gcc/testsuite/gcc.target/i386/pieces-memset-42.c
new file mode 100644
index 00000000000..df0c122aae7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-42.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, 0, 33);
+}
+
+/* { dg-final { scan-assembler-times "vpxor\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-43.c b/gcc/testsuite/gcc.target/i386/pieces-memset-43.c
new file mode 100644
index 00000000000..2f2179c2df9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-43.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=sandybridge" } */
+
+extern char *dst;
+
+void
+foo (void)
+{
+  __builtin_memset (dst, -1, 33);
+}
+
+/* { dg-final { scan-assembler-times "vpcmpeqd\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 2 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-5.c b/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
new file mode 100644
index 00000000000..3e95db5efef
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-5.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=haswell" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-6.c b/gcc/testsuite/gcc.target/i386/pieces-memset-6.c
new file mode 100644
index 00000000000..571113c3a33
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-6.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=intel" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 33);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%ymm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" { target { ! ia32 } } } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-7.c b/gcc/testsuite/gcc.target/i386/pieces-memset-7.c
new file mode 100644
index 00000000000..fd159869817
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-7.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx -msse2 -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 17);
+}
+
+/* { dg-final { scan-assembler-times "movups\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-8.c b/gcc/testsuite/gcc.target/i386/pieces-memset-8.c
new file mode 100644
index 00000000000..7df0019ef63
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-8.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mno-avx2 -mavx -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 17);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
diff --git a/gcc/testsuite/gcc.target/i386/pieces-memset-9.c b/gcc/testsuite/gcc.target/i386/pieces-memset-9.c
new file mode 100644
index 00000000000..ed45d590875
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pieces-memset-9.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mavx512f -mtune=generic" } */
+
+extern char *dst;
+
+void
+foo (int x)
+{
+  __builtin_memset (dst, x, 17);
+}
+
+/* { dg-final { scan-assembler-times "vmovdqu\[ \\t\]+\[^\n\]*%xmm" 1 } } */
+/* No need to dynamically realign the stack here.  */
+/* { dg-final { scan-assembler-not "and\[^\n\r]*%\[re\]sp" } } */
+/* Nor use a frame pointer.  */
+/* { dg-final { scan-assembler-not "%\[re\]bp" } } */
