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Fix a catastrophic PPC64 ABI bug: i32 operands which are passed in memory (all of the parameter registers are used) are loaded from sp offsets that were off by 4. 

llvm-svn: 53979
This commit is contained in:
Evan Cheng 2008-07-24 08:17:07 +00:00
parent 4a154b2857
commit 0f0aee213f
2 changed files with 12 additions and 0 deletions
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1
llvm/lib/Target/PowerPC/PPCISelLowering.cpp
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@ -1582,6 +1582,7 @@ PPCTargetLowering::LowerFORMAL_ARGUMENTS(SDOperand Op,
++GPR_idx;
} else {
needsLoad = true;
ArgSize = PtrByteSize;
}
// All int arguments reserve stack space in Macho ABI.
if (isMachoABI || needsLoad) ArgOffset += 8;

11
llvm/test/CodeGen/PowerPC/2008-07-24-PPC64-CCBug.ll Normal file
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@ -0,0 +1,11 @@
; RUN: llvm-as < %s | llc -mtriple=powerpc64-apple-darwin | grep lwz | grep 228
@"\01LC" = internal constant [4 x i8] c"%d\0A\00" ; <[4 x i8]*> [#uses=1]
define void @llvm_static_func(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5, i32 %a6, i32 %a7, i32 %a8, i32 %a9, i32 %a10, i32 %a11, i32 %a12, i32 %a13, i32 %a14, i32 %a15) nounwind {
entry:
tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @"\01LC", i32 0, i64 0), i32 %a8 ) nounwind ; <i32>:0 [#uses=0]
ret void
}
declare i32 @printf(i8*, ...) nounwind