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| author | Reed Kotler <rkotler@mips.com> | 2013-05-03 23:17:24 +0000 |
|---|---|---|
| committer | Reed Kotler <rkotler@mips.com> | 2013-05-03 23:17:24 +0000 |
| commit | 2bb955a6931580c9bb0472aa29b3fbbabe263295 (patch) | |
| tree | 894e8f0b2a84a0b073152b4d8525497546005539 | |
| parent | 3170ad7dd47e2584c44aad7455b161a92058f84a (diff) | |
| download | llvm-2bb955a6931580c9bb0472aa29b3fbbabe263295.tar.gz llvm-2bb955a6931580c9bb0472aa29b3fbbabe263295.tar.bz2 llvm-2bb955a6931580c9bb0472aa29b3fbbabe263295.tar.xz | |
Remove some uneeded pseudos in the presence of the naked function attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181072 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/Mips/MipsAsmPrinter.cpp | 10 | ||||
| -rw-r--r-- | test/CodeGen/Mips/tnaked.ll | 29 |
2 files changed, 37 insertions, 2 deletions
diff --git a/lib/Target/Mips/MipsAsmPrinter.cpp b/lib/Target/Mips/MipsAsmPrinter.cpp index f4f71cbccb..6e4feda4f5 100644 --- a/lib/Target/Mips/MipsAsmPrinter.cpp +++ b/lib/Target/Mips/MipsAsmPrinter.cpp @@ -249,12 +249,18 @@ void MipsAsmPrinter::EmitFunctionEntryLabel() { void MipsAsmPrinter::EmitFunctionBodyStart() { MCInstLowering.Initialize(Mang, &MF->getContext()); - emitFrameDirective(); + bool IsNakedFunction = + MF->getFunction()-> + getAttributes().hasAttribute(AttributeSet::FunctionIndex, + Attribute::Naked); + if (!IsNakedFunction) + emitFrameDirective(); if (OutStreamer.hasRawTextSupport()) { SmallString<128> Str; raw_svector_ostream OS(Str); - printSavedRegsBitmask(OS); + if (!IsNakedFunction) + printSavedRegsBitmask(OS); OutStreamer.EmitRawText(OS.str()); if (!Subtarget->inMips16Mode()) { OutStreamer.EmitRawText(StringRef("\t.set\tnoreorder")); diff --git a/test/CodeGen/Mips/tnaked.ll b/test/CodeGen/Mips/tnaked.ll new file mode 100644 index 0000000000..f5bdd915b2 --- /dev/null +++ b/test/CodeGen/Mips/tnaked.ll @@ -0,0 +1,29 @@ +; RUN: llc -march=mipsel < %s | FileCheck %s + + +define void @tnaked() #0 { +entry: + ret void +} + +; CHECK: .ent tnaked +; CHECK: tnaked: +; CHECK-NOT: .frame {{.*}} +; CHECK-NOT: .mask {{.*}} +; CHECK-NOT: .fmask {{.*}} +; CHECK-NOT: addiu $sp, $sp, -8 + +define void @tnonaked() #1 { +entry: + ret void +} + +; CHECK: .ent tnonaked +; CHECK: tnonaked: +; CHECK: .frame $fp,8,$ra +; CHECK: .mask 0x40000000,-4 +; CHECK: .fmask 0x00000000,0 +; CHECK: addiu $sp, $sp, -8 + +attributes #0 = { naked noinline nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #1 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" } |