https://gcc.gnu.org/g:ae2912748b9913fe9cd198db1b3fa704d0cbc728
commit r15-9121-gae2912748b9913fe9cd198db1b3fa704d0cbc728
Author: Richard Biener <rguent...@suse.de>
Date: Mon Mar 31 14:56:25 2025 +0200
target/119549 - fixup handling of -mno-sse4 in target attribute
The following fixes ix86_valid_target_attribute_inner_p to properly
handle target("no-sse4") via OPT_mno_sse4 rather than as unset OPT_msse4.
I've added asserts to ix86_handle_option that RejectNegative is honored
for both.
PR target/119549
* common/config/i386/i386-common.cc (ix86_handle_option):
Assert that both OPT_msse4 and OPT_mno_sse4 are never unset.
* config/i386/i386-options.cc (ix86_valid_target_attribute_inner_p):
Process negated OPT_msse4 as OPT_mno_sse4.
* gcc.target/i386/pr119549.c: New testcase.
Diff:
---
gcc/common/config/i386/i386-common.cc | 2 ++
gcc/config/i386/i386-options.cc | 7 +++++++
gcc/testsuite/gcc.target/i386/pr119549.c | 15 +++++++++++++++
3 files changed, 24 insertions(+)
diff --git a/gcc/common/config/i386/i386-common.cc
b/gcc/common/config/i386/i386-common.cc
index 80aec3244bc3..4815fbc4d359 100644
--- a/gcc/common/config/i386/i386-common.cc
+++ b/gcc/common/config/i386/i386-common.cc
@@ -1519,11 +1519,13 @@ ix86_handle_option (struct gcc_options *opts,
return true;
case OPT_msse4:
+ gcc_assert (value != 0);
opts->x_ix86_isa_flags |= OPTION_MASK_ISA_SSE4_SET;
opts->x_ix86_isa_flags_explicit |= OPTION_MASK_ISA_SSE4_SET;
return true;
case OPT_mno_sse4:
+ gcc_assert (value != 0);
opts->x_ix86_isa_flags &= ~OPTION_MASK_ISA_SSE4_UNSET;
opts->x_ix86_isa_flags_explicit |= OPTION_MASK_ISA_SSE4_UNSET;
opts->x_ix86_isa_flags2 &= ~OPTION_MASK_ISA2_SSE4_UNSET;
diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-options.cc
index 91f59e16fd5c..a9fac011f3d2 100644
--- a/gcc/config/i386/i386-options.cc
+++ b/gcc/config/i386/i386-options.cc
@@ -1271,6 +1271,13 @@ ix86_valid_target_attribute_inner_p (tree fndecl, tree
args, char *p_strings[],
}
}
+ /* Fixup -msse4 which is RejectNegative to -mno-sse4 when negated. */
+ if (opt == OPT_msse4 && !opt_set_p)
+ {
+ opt = OPT_mno_sse4;
+ opt_set_p = true;
+ }
+
/* Process the option. */
if (opt == N_OPTS)
{
diff --git a/gcc/testsuite/gcc.target/i386/pr119549.c
b/gcc/testsuite/gcc.target/i386/pr119549.c
new file mode 100644
index 000000000000..a465bec3cf00
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr119549.c
@@ -0,0 +1,15 @@
+/* { dg-do compile } */
+/* { dg-options "-msse4" } */
+
+typedef long long v2di __attribute__((vector_size(16)));
+
+static inline __attribute__((always_inline))
+int rte_trace_feature_is_enabled() { return 1; } /* { dg-error "inlining
failed" } */
+
+void __attribute__((target ("no-sse3"))) __attribute__((target ("no-sse4")))
+rte_eal_trace_generic_void_init(void)
+{
+ if (!rte_trace_feature_is_enabled()) return;
+ __asm__ volatile ("" : : : "memory");
+}
+
