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[clang][LoongArch] Ensure target("lasx") implies LSX support (#153542)

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Currently, `__attribute__((target("lasx")))` does not automatically
enable LSX support, causing Clang to fail with `-mno-lsx`. Since
LASX depends on LSX, enabling LASX should implicitly enable LSX to
avoid clang error.

Fixes #149512.

Depends on #153541

(cherry picked from commit a1b6e7ff393533a5c4f3bdfd4efe5da106e2de2b)
This commit is contained in:
Ami-zhang 2025-08-15 09:53:08 +08:00 committed by Tobias Hieta
parent 9bf61a610c
commit 08b5797556
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2 changed files with 3 additions and 1 deletions
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2
clang/lib/Basic/Targets/LoongArch.cpp
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@ -461,6 +461,8 @@ LoongArchTargetInfo::parseTargetAttr(StringRef Features) const {
case AttrFeatureKind::Feature:
Ret.Features.push_back("+" + Value.str());
if (Value == "lasx")
Ret.Features.push_back("+lsx");
break;
}
}

2
clang/test/CodeGen/LoongArch/targetattr-lasx.c
View File

@ -4,4 +4,4 @@ __attribute__((target("lasx")))
// CHECK: #[[ATTR0:[0-9]+]] {
void testlasx() {}
// CHECK: attributes #[[ATTR0]] = { {{.*}}"target-features"="+64bit,+lasx,-lsx"{{.*}} }
// CHECK: attributes #[[ATTR0]] = { {{.*}}"target-features"="+64bit,+lasx,+lsx"{{.*}} }