d966fb6fef
eliminate the trunc. Differential Revision: http://reviews.llvm.org/D10442 llvm-svn: 245444
18 lines
543 B
LLVM
18 lines
543 B
LLVM
; RUN: llc -march=sparc < %s
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;; getBooleanContents on Sparc used to claim that no bits mattered
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;; other than the first for SELECT. Thus, the 'trunc' got eliminated
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;; as redundant. But, cmp does NOT ignore the other bits!
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; CHECK-LABEL select_mask:
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; CHECK: ldub [%o0], [[R:%[goli][0-7]]]
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; CHECK: and [[R]], 1, [[V:%[goli][0-7]]]
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; CHECK: cmp [[V]], 0
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define i32 @select_mask(i8* %this) {
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entry:
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%bf.load2 = load i8, i8* %this, align 4
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%bf.cast5 = trunc i8 %bf.load2 to i1
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%cond = select i1 %bf.cast5, i32 2, i32 0
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ret i32 %cond
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}
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