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Test case for PR2082.

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llvm-svn: 47501
This commit is contained in:
Evan Cheng 2008-02-22 20:38:49 +00:00
parent bb645b395c
commit 3b35d2a86c
1 changed files with 55 additions and 0 deletions
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test/CodeGen/X86/2008-02-22-LocalRegAllocBug.ll Normal file
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; RUN: llvm-as < %s | llc -regalloc=local -mattr=+mmx | grep esi
; PR2082
; Local register allocator was refusing to use ESI, EDI, and EBP so it ran out of
; registers.
define void @transpose4x4(i8* %dst, i8* %src, i32 %dst_stride, i32 %src_stride) {
entry:
%dst_addr = alloca i8* ; <i8**> [#uses=5]
%src_addr = alloca i8* ; <i8**> [#uses=5]
%dst_stride_addr = alloca i32 ; <i32*> [#uses=4]
%src_stride_addr = alloca i32 ; <i32*> [#uses=4]
%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store i8* %dst, i8** %dst_addr
store i8* %src, i8** %src_addr
store i32 %dst_stride, i32* %dst_stride_addr
store i32 %src_stride, i32* %src_stride_addr
%tmp = load i8** %dst_addr, align 4 ; <i8*> [#uses=1]
%tmp1 = getelementptr i8* %tmp, i32 0 ; <i8*> [#uses=1]
%tmp12 = bitcast i8* %tmp1 to i32* ; <i32*> [#uses=1]
%tmp3 = load i8** %dst_addr, align 4 ; <i8*> [#uses=1]
%tmp4 = load i32* %dst_stride_addr, align 4 ; <i32> [#uses=1]
%tmp5 = getelementptr i8* %tmp3, i32 %tmp4 ; <i8*> [#uses=1]
%tmp56 = bitcast i8* %tmp5 to i32* ; <i32*> [#uses=1]
%tmp7 = load i32* %dst_stride_addr, align 4 ; <i32> [#uses=1]
%tmp8 = mul i32 %tmp7, 2 ; <i32> [#uses=1]
%tmp9 = load i8** %dst_addr, align 4 ; <i8*> [#uses=1]
%tmp10 = getelementptr i8* %tmp9, i32 %tmp8 ; <i8*> [#uses=1]
%tmp1011 = bitcast i8* %tmp10 to i32* ; <i32*> [#uses=1]
%tmp13 = load i32* %dst_stride_addr, align 4 ; <i32> [#uses=1]
%tmp14 = mul i32 %tmp13, 3 ; <i32> [#uses=1]
%tmp15 = load i8** %dst_addr, align 4 ; <i8*> [#uses=1]
%tmp16 = getelementptr i8* %tmp15, i32 %tmp14 ; <i8*> [#uses=1]
%tmp1617 = bitcast i8* %tmp16 to i32* ; <i32*> [#uses=1]
%tmp18 = load i8** %src_addr, align 4 ; <i8*> [#uses=1]
%tmp19 = getelementptr i8* %tmp18, i32 0 ; <i8*> [#uses=1]
%tmp1920 = bitcast i8* %tmp19 to i32* ; <i32*> [#uses=1]
%tmp21 = load i8** %src_addr, align 4 ; <i8*> [#uses=1]
%tmp22 = load i32* %src_stride_addr, align 4 ; <i32> [#uses=1]
%tmp23 = getelementptr i8* %tmp21, i32 %tmp22 ; <i8*> [#uses=1]
%tmp2324 = bitcast i8* %tmp23 to i32* ; <i32*> [#uses=1]
%tmp25 = load i32* %src_stride_addr, align 4 ; <i32> [#uses=1]
%tmp26 = mul i32 %tmp25, 2 ; <i32> [#uses=1]
%tmp27 = load i8** %src_addr, align 4 ; <i8*> [#uses=1]
%tmp28 = getelementptr i8* %tmp27, i32 %tmp26 ; <i8*> [#uses=1]
%tmp2829 = bitcast i8* %tmp28 to i32* ; <i32*> [#uses=1]
%tmp30 = load i32* %src_stride_addr, align 4 ; <i32> [#uses=1]
%tmp31 = mul i32 %tmp30, 3 ; <i32> [#uses=1]
%tmp32 = load i8** %src_addr, align 4 ; <i8*> [#uses=1]
%tmp33 = getelementptr i8* %tmp32, i32 %tmp31 ; <i8*> [#uses=1]
%tmp3334 = bitcast i8* %tmp33 to i32* ; <i32*> [#uses=1]
call void asm sideeffect "movd $4, %mm0 \0A\09movd $5, %mm1 \0A\09movd $6, %mm2 \0A\09movd $7, %mm3 \0A\09punpcklbw %mm1, %mm0 \0A\09punpcklbw %mm3, %mm2 \0A\09movq %mm0, %mm1 \0A\09punpcklwd %mm2, %mm0 \0A\09punpckhwd %mm2, %mm1 \0A\09movd %mm0, $0 \0A\09punpckhdq %mm0, %mm0 \0A\09movd %mm0, $1 \0A\09movd %mm1, $2 \0A\09punpckhdq %mm1, %mm1 \0A\09movd %mm1, $3 \0A\09", "=*m,=*m,=*m,=*m,*m,*m,*m,*m,~{dirflag},~{fpsr},~{flags}"( i32* %tmp12, i32* %tmp56, i32* %tmp1011, i32* %tmp1617, i32* %tmp1920, i32* %tmp2324, i32* %tmp2829, i32* %tmp3334 ) nounwind
br label %return
return: ; preds = %entry
ret void
}