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[PPC] Disable vsx and altivec when -msoft-float is used #100450

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Merged
merged 5 commits into from
Aug 8, 2024
Merged

[PPC] Disable vsx and altivec when -msoft-float is used #100450

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eac208b
[PPC] Disable vsx and altivec when -msoft-float is used
Jul 24, 2024
6f1f08e
Address review comments
Jul 29, 2024
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Address review
Jul 31, 2024
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Aug 7, 2024
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Aug 7, 2024
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5 changes: 5 additions & 0 deletions clang/lib/Basic/Targets/PPC.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -690,6 +690,11 @@ bool PPCTargetInfo::initFeatureMap(
return false;
}

if (llvm::is_contained(FeaturesVec, "-hard-float")) {
Features["altivec"] = false;
Features["vsx"] = false;
}

return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
}

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13 changes: 13 additions & 0 deletions clang/test/Driver/ppc-soft-float.c
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@@ -0,0 +1,13 @@
// RUN: %clang -target powerpc64-unknown-unknown -mcpu=pwr10 -msoft-float -S -emit-llvm %s -o - | FileCheck %s -check-prefix=CHECKSOFT
// RUN: %clang -target powerpc64-unknown-unknown -mcpu=pwr10 -S -emit-llvm %s -o - | FileCheck %s -check-prefix=CHECKNOSOFT

int main () {
return 0;
}

// CHECKSOFT-DAG: -hard-float
// CHECKSOFT-DAG: -vsx
// CHECKSOFT-DAG: -altivec

// CHECKNOSOFT-DAG: +vsx
// CHECKNOSOFT-DAG: +altivec