@@ -2147,22 +2147,6 @@ proc check_effective_target_arm_v8_vfp_ok {} {
}
}
-# Return 1 if this is an ARM target supporting -mfpu=neon-fp-armv8
-# -mfloat-abi=softfp
-proc check_effective_target_arm_v8_neon_ok {} {
- if { [check_effective_target_arm32] } {
- return [check_no_compiler_messages arm_v8_neon_ok object {
- int foo (void)
- {
- __asm__ volatile ("vrintn.f32 q0, q0");
- return 0;
- }
- } "-mfpu=neon-fp-armv8 -mfloat-abi=softfp"]
- } else {
- return 0
- }
-}
-
# Return 1 if this is an ARM target supporting -mfpu=vfp
# -mfloat-abi=hard. Some multilibs may be incompatible with these
# options.
@@ -2226,7 +2210,8 @@ proc add_options_for_arm_v8_neon { flags } {
if { ! [check_effective_target_arm_v8_neon_ok] } {
return "$flags"
}
- return "$flags -march=armv8-a -mfpu=neon-fp-armv8 -mfloat-abi=softfp"
+ global et_arm_v8_neon_flags
+ return "$flags $et_arm_v8_neon_flags"
}
# Add the options needed for NEON. We need either -mfloat-abi=softfp
@@ -2270,6 +2255,38 @@ proc check_effective_target_arm_neon_ok { } {
check_effective_target_arm_neon_ok_nocache]
}
+# Return 1 if this is an ARM target supporting -mfpu=neon-fp-armv8
+# -mfloat-abi=softfp or equivalent options. Some multilibs may be
+# incompatible with these options. Also set et_arm_v8_neon_flags to the
+# best options to add.
+
+proc check_effective_target_arm_v8_neon_ok_nocache { } {
+ global et_arm_v8_neon_flags
+ set et_arm_v8_neon_flags ""
+ if { [check_effective_target_arm32] } {
+ foreach flags {"" "-mfloat-abi=softfp" "-mfpu=neon-fp-armv8" "-mfpu=neon-fp-armv8 -mfloat-abi=softfp"} {
+ if { [check_no_compiler_messages_nocache arm_v8_neon_ok object {
+ #include "arm_neon.h"
+ void
+ foo ()
+ {
+ __asm__ volatile ("vrintn.f32 q0, q0");
+ }
+ } "$flags"] } {
+ set et_arm_v8_neon_flags $flags
+ return 1
+ }
+ }
+ }
+
+ return 0
+}
+
+proc check_effective_target_arm_v8_neon_ok { } {
+ return [check_cached_effective_target arm_v8_neon_ok \
+ check_effective_target_arm_v8_neon_ok_nocache]
+}
+
# Return 1 if this is an ARM target supporting -mfpu=neon-vfpv4
# -mfloat-abi=softfp or equivalent options. Some multilibs may be
# incompatible with these options. Also set et_arm_neonv2_flags to the
@@ -2509,6 +2526,24 @@ proc check_effective_target_arm_neonv2_hw { } {
} [add_options_for_arm_neonv2 ""]]
}
+# Return 1 if the target supports executing ARMv8 NEON instructions, 0
+# otherwise.
+
+proc check_effective_target_arm_v8_neon_hw { } {
+ return [check_runtime arm_v8_neon_hw_available {
+ #include "arm_neon.h"
+ int
+ main (void)
+ {
+ float32x2_t a;
+ asm ("vrinta.f32 %P0, %P1"
+ : "=w" (a)
+ : "0" (a));
+ return 0;
+ }
+ } [add_options_for_arm_v8_neon ""]]
+}
+
# Return 1 if this is a ARM target with NEON enabled.
proc check_effective_target_arm_neon { } {
@@ -4035,7 +4070,9 @@ proc check_effective_target_vect_call_btruncf { } {
verbose "check_effective_target_vect_call_btruncf: using cached result" 2
} else {
set et_vect_call_btruncf_saved 0
- if { [istarget aarch64*-*-*] } {
+ if { [istarget aarch64*-*-*]
+ || ([istarget arm*-*-*]
+ && [check_effective_target_arm_v8_neon_ok]) } {
set et_vect_call_btruncf_saved 1
}
}
@@ -4071,7 +4108,9 @@ proc check_effective_target_vect_call_ceilf { } {
verbose "check_effective_target_vect_call_ceilf: using cached result" 2
} else {
set et_vect_call_ceilf_saved 0
- if { [istarget aarch64*-*-*] } {
+ if { [istarget aarch64*-*-*]
+ || ([istarget arm*-*-*]
+ && [check_effective_target_arm_v8_neon_ok]) } {
set et_vect_call_ceilf_saved 1
}
}
@@ -4107,7 +4146,9 @@ proc check_effective_target_vect_call_floorf { } {
verbose "check_effective_target_vect_call_floorf: using cached result" 2
} else {
set et_vect_call_floorf_saved 0
- if { [istarget aarch64*-*-*] } {
+ if { [istarget aarch64*-*-*]
+ || ([istarget arm*-*-*]
+ && [check_effective_target_arm_v8_neon_ok]) } {
set et_vect_call_floorf_saved 1
}
}
@@ -4215,7 +4256,9 @@ proc check_effective_target_vect_call_roundf { } {
verbose "check_effective_target_vect_call_roundf: using cached result" 2
} else {
set et_vect_call_roundf_saved 0
- if { [istarget aarch64*-*-*] } {
+ if { [istarget aarch64*-*-*]
+ || ([istarget arm*-*-*]
+ && [check_effective_target_arm_v8_neon_ok]) } {
set et_vect_call_roundf_saved 1
}
}
@@ -5117,6 +5160,14 @@ proc check_vect_support_and_set_flags { } {
}
} elseif [istarget ia64-*-*] {
set dg-do-what-default run
+ } elseif [is-effective-target arm_v8_neon_ok] {
+ eval lappend DEFAULT_VECTCFLAGS [add_options_for_arm_v8_neon ""]
+ lappend DEFAULT_VECTCFLAGS "-ffast-math"
+ if [is-effective-target arm_v8_neon_hw] {
+ set dg-do-what-default run
+ } else {
+ set dg-do-what-default compile
+ }
} elseif [is-effective-target arm_neon_ok] {
eval lappend DEFAULT_VECTCFLAGS [add_options_for_arm_neon ""]
# NEON does not support denormals, so is not used for vectorization by