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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 | 0f2b10eb0d59c1b02aa63602756abb74f25877ae (patch) | |
| tree | 47cd74a53f3f2c7b3cb23e5d3040bf92df53cff2 | |
| parent | 5b637078e1ab1946ef771210c97ca4b4bfacc4f5 (diff) | |
| download | bcm5719-llvm-0f2b10eb0d59c1b02aa63602756abb74f25877ae.tar.gz bcm5719-llvm-0f2b10eb0d59c1b02aa63602756abb74f25877ae.zip | |
Remove some uneeded pseudos in the presence of the naked function attribute.
llvm-svn: 181072
| -rw-r--r-- | llvm/lib/Target/Mips/MipsAsmPrinter.cpp | 10 | ||||
| -rw-r--r-- | llvm/test/CodeGen/Mips/tnaked.ll | 29 |
2 files changed, 37 insertions, 2 deletions
diff --git a/llvm/lib/Target/Mips/MipsAsmPrinter.cpp b/llvm/lib/Target/Mips/MipsAsmPrinter.cpp index f4f71cbccb2..6e4feda4f53 100644 --- a/llvm/lib/Target/Mips/MipsAsmPrinter.cpp +++ b/llvm/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/llvm/test/CodeGen/Mips/tnaked.ll b/llvm/test/CodeGen/Mips/tnaked.ll new file mode 100644 index 00000000000..f5bdd915b28 --- /dev/null +++ b/llvm/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" } |
