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dead nodes, but in this case its missing one. Fixing the DAGCombiner is desirable, but it's somewhat involved. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58777 91177308-0d34-0410-b5e6-96231b3b80d8
23 lines
943 B
LLVM
23 lines
943 B
LLVM
; RUN: llvm-as < %s | llc -march=ppc32
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; The DAGCombiner leaves behind a dead node in this testcase. Currently
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; ISel is ignoring dead nodes, though it would be preferable for
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; DAGCombiner to be able to eliminate the dead node.
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define void @GrayATo32ARGBTabB(i8* %baseAddr, i16** %cmp, i32 %rowBytes) nounwind {
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entry:
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br label %bb1
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bb1: ; preds = %bb1, %entry
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%0 = load i16* null, align 2 ; <i16> [#uses=1]
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%1 = ashr i16 %0, 4 ; <i16> [#uses=1]
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%2 = sext i16 %1 to i32 ; <i32> [#uses=1]
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%3 = getelementptr i8* null, i32 %2 ; <i8*> [#uses=1]
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%4 = load i8* %3, align 1 ; <i8> [#uses=1]
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%5 = zext i8 %4 to i32 ; <i32> [#uses=1]
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%6 = shl i32 %5, 24 ; <i32> [#uses=1]
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%7 = or i32 0, %6 ; <i32> [#uses=1]
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store i32 %7, i32* null, align 4
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br label %bb1
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}
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