--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -2664,6 +2664,10 @@ Target requires a command line argument to enable a SIMD instruction set.
 @item xorsign
 Target supports the xorsign optab expansion.
 
+@item ifn_copysign
+Target supports the IFN_COPYSIGN optab expansion for both scalar and vector
+types.
+
 @end table
 
 @subsubsection Environment attributes
diff --git a/gcc/match.pd b/gcc/match.pd
index d57e29bfe1d68afd4df4dda20fecc2405ff05332..87d13e7e3e1aa6d89119142b614890dc4729b521 100644
--- a/gcc/match.pd
+++ b/gcc/match.pd
@@ -1159,13 +1159,22 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT)
  (simplify
   (copysigns @0 REAL_CST@1)
   (if (!REAL_VALUE_NEGATIVE (TREE_REAL_CST (@1)))
-   (abs @0))))
+   (abs @0)
+#if GIMPLE
+   (if (!direct_internal_fn_supported_p (IFN_COPYSIGN, type,
+					 OPTIMIZE_FOR_BOTH))
+    (negate (abs @0)))
+#endif
+   )))
 
+#if GIMPLE
 /* Transform fneg (fabs (X)) -> copysign (X, -1).  */
 (simplify
  (negate (abs @0))
- (IFN_COPYSIGN @0 { build_minus_one_cst (type); }))
-
+ (if (direct_internal_fn_supported_p (IFN_COPYSIGN, type,
+				      OPTIMIZE_FOR_BOTH))
+   (IFN_COPYSIGN @0 { build_minus_one_cst (type); })))
+#endif
 /* copysign(copysign(x, y), z) -> copysign(x, z).  */
 (for copysigns (COPYSIGN_ALL)
  (simplify
diff --git a/gcc/testsuite/gcc.dg/fold-copysign-1.c b/gcc/testsuite/gcc.dg/fold-copysign-1.c
index f9cafd14ab05f5e8ab2f6f68e62801d21c2df6a6..96b80c733794fffada1b08274ef39cc8f6e442ce 100644
--- a/gcc/testsuite/gcc.dg/fold-copysign-1.c
+++ b/gcc/testsuite/gcc.dg/fold-copysign-1.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O -fdump-tree-cddce1" } */
+/* { dg-additional-options "-msse -mfpmath=sse" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
 
 double foo (double x)
 {
@@ -12,5 +13,7 @@ double bar (double x)
   return __builtin_copysign (x, minuszero);
 }
 
-/* { dg-final { scan-tree-dump-times "__builtin_copysign" 1 "cddce1" } } */
-/* { dg-final { scan-tree-dump-times "= ABS_EXPR" 1 "cddce1" } } */
+/* { dg-final { scan-tree-dump-times "__builtin_copysign" 1 "cddce1" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "= ABS_EXPR" 1 "cddce1" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "= -" 1 "cddce1" { target { ! ifn_copysign } } } } */
+/* { dg-final { scan-tree-dump-times "= ABS_EXPR" 2 "cddce1" { target { ! ifn_copysign } } } } */
diff --git a/gcc/testsuite/gcc.dg/pr55152-2.c b/gcc/testsuite/gcc.dg/pr55152-2.c
index 605f202ed6bc7aa8fe921457b02ff0b88cc63ce6..24068cffa4a8e2807ba7d16c4ed3def4f736e797 100644
--- a/gcc/testsuite/gcc.dg/pr55152-2.c
+++ b/gcc/testsuite/gcc.dg/pr55152-2.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O -ffinite-math-only -fno-signed-zeros -fstrict-overflow -fdump-tree-optimized" } */
+/* { dg-additional-options "-msse -mfpmath=sse" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
 
 double g (double a)
 {
@@ -10,5 +11,6 @@ int f(int a)
   return (a<-a)?a:-a;
 }
 
-/* { dg-final { scan-tree-dump-times "\.COPYSIGN" 1 "optimized" } } */
-/* { dg-final { scan-tree-dump-times "ABS_EXPR" 1 "optimized" } } */
+/* { dg-final { scan-tree-dump-times "\.COPYSIGN" 1 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "ABS_EXPR" 1 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "ABS_EXPR" 2 "optimized" { target { ! ifn_copysign } } } } */
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/abs-4.c b/gcc/testsuite/gcc.dg/tree-ssa/abs-4.c
index e1b825f37f69ac3c4666b3a52d733368805ad31d..80fa448df1259c7dba406797f4198205783a2fba 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/abs-4.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/abs-4.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O1 -fdump-tree-optimized" } */
+/* { dg-additional-options "-msse -mfpmath=sse" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
 /* PR tree-optimization/109829 */
 
 float abs_f(float x) { return __builtin_signbit(x) ? x : -x; }
@@ -9,6 +10,8 @@ long double abs_ld(long double x) { return __builtin_signbit(x) ? x : -x; }
 
 /* __builtin_signbit(x) ? x : -x. Should be convert into - ABS_EXP<x> */
 /* { dg-final { scan-tree-dump-not "signbit" "optimized"} } */
-/* { dg-final { scan-tree-dump-times "= ABS_EXPR" 1 "optimized"} } */
-/* { dg-final { scan-tree-dump-times "= -" 1 "optimized"} } */
-/* { dg-final { scan-tree-dump-times "= \.COPYSIGN" 2 "optimized"} } */
+/* { dg-final { scan-tree-dump-times "= ABS_EXPR" 1 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "= -" 1 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "= \.COPYSIGN" 2 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "= ABS_EXPR" 3 "optimized" { target { ! ifn_copysign } } } } */
+/* { dg-final { scan-tree-dump-times "= -" 3 "optimized" { target { ! ifn_copysign } } } } */
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/backprop-6.c b/gcc/testsuite/gcc.dg/tree-ssa/backprop-6.c
index c3a138642d6ff7be984e91fa1343cb2718db7ae1..4087ba93018bb71710102eb379460bc760020081 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/backprop-6.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/backprop-6.c
@@ -1,5 +1,6 @@
 /* { dg-do compile } */
 /* { dg-options "-O -fdump-tree-backprop-details" }  */
+/* { dg-additional-options "-msse -mfpmath=sse" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
 
 void start (void *);
 void end (void *);
@@ -26,6 +27,8 @@ TEST_FUNCTION (float, f)
 TEST_FUNCTION (double, )
 TEST_FUNCTION (long double, l)
 
-/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = -} 4 "backprop" } } */
-/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = \.COPYSIGN} 2 "backprop" } } */
-/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = ABS_EXPR <} 1 "backprop" } } */
+/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = -} 4 "backprop" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = \.COPYSIGN} 2 "backprop" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = ABS_EXPR <} 1 "backprop" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = -} 6 "backprop" { target { ! ifn_copysign } } } } */
+/* { dg-final { scan-tree-dump-times {Deleting[^\n]* = ABS_EXPR <} 3 "backprop" { target { ! ifn_copysign } } } } */
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/copy-sign-2.c b/gcc/testsuite/gcc.dg/tree-ssa/copy-sign-2.c
index e5d565c4b9832c00106588ef411fbd8c292a5cad..e43bc315bef2bd11c11cfd2685f5088e792b7bf7 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/copy-sign-2.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/copy-sign-2.c
@@ -1,4 +1,5 @@
 /* { dg-options "-O2 -ffast-math -fdump-tree-optimized" } */
+/* { dg-additional-options "-msse -mfpmath=sse" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
 /* { dg-do compile } */
 float f(float x)
 {
@@ -10,5 +11,6 @@ float f1(float x)
   float t = __builtin_copysignf (1.0f, -x);
   return x * t;
 }
-/* { dg-final { scan-tree-dump-times "ABS" 1 "optimized"} } */
-/* { dg-final { scan-tree-dump-times ".COPYSIGN" 1 "optimized"} } */
+/* { dg-final { scan-tree-dump-times "ABS" 1 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times ".COPYSIGN" 1 "optimized" { target ifn_copysign } } } */
+/* { dg-final { scan-tree-dump-times "ABS" 2 "optimized" { target { ! ifn_copysign } } } } */
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/mult-abs-2.c b/gcc/testsuite/gcc.dg/tree-ssa/mult-abs-2.c
index a22896b21c8b5a4d5d8e28bd8ae0db896e63ade0..675127cfe56b2e9aa9d4c06e2bdce62b59545a08 100644
--- a/gcc/testsuite/gcc.dg/tree-ssa/mult-abs-2.c
+++ b/gcc/testsuite/gcc.dg/tree-ssa/mult-abs-2.c
@@ -34,5 +34,5 @@ float i1(float x)
 {
   return x * (x <= 0.f ? 1.f : -1.f);
 }
-/* { dg-final { scan-tree-dump-times "ABS" 4 "gimple"} } */
-/* { dg-final { scan-tree-dump-times "\.COPYSIGN" 4 "gimple"} } */
+
+/* { dg-final { scan-tree-dump-times "ABS" 8 "gimple" } } */
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 7f13ff0ca565efdf19065811f3301db897329073..64a081cfafd78e5ccb7322d3b382f800b30bbe70 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -7830,6 +7830,29 @@ proc check_effective_target_xorsign { } {
 	     || [istarget aarch64*-*-*] || [istarget arm*-*-*] }}]
 }
 
+# Return 1 if the target plus current options supports folding of
+# copysign into IFN_COPYSIGN.
+#
+# This won't change for different subtargets so cache the result.
+
+proc check_effective_target_ifn_copysign { } {
+    return [check_cached_effective_target_indexed ifn_copysign {
+      expr {
+	 (([istarget i?86-*-*] || [istarget x86_64-*-*])
+	   && [is-effective-target sse])
+	 || ([istarget loongarch*-*-*] && [check_effective_target_loongarch_sx])
+	 || ([istarget powerpc*-*-*]
+	     && ![istarget powerpc-*-linux*paired*])
+	 || [istarget alpha*-*-*]
+	 || [istarget aarch64*-*-*]
+	 || [is-effective-target arm_neon]
+	 || ([istarget s390*-*-*]
+	     && [check_effective_target_s390_vx])
+	 || ([istarget riscv*-*-*]
+	     && [check_effective_target_riscv_v])
+	}}]
+}
+
 # Return 1 if the target plus current options supports a vector
 # widening summation of *short* args into *int* result, 0 otherwise.
 #
