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1d9cd50677
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50591 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
598 B
LLVM
26 lines
598 B
LLVM
; RUN: llvm-as < %s | opt -instcombine | llvm-dis > %t1.ll
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; RUN: grep udiv %t1.ll | count 3
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; RUN: grep zext %t1.ll | count 3
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; PR2274
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; The udiv instructions shouldn't be optimized away, and the
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; sext instructions should be optimized to zext.
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define i64 @foo(i32 %x) nounwind {
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%r = udiv i32 %x, -1
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%z = sext i32 %r to i64
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ret i64 %z
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}
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define i64 @bar(i32 %x) nounwind {
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%y = lshr i32 %x, 30
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%r = udiv i32 %y, 3
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%z = sext i32 %r to i64
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ret i64 %z
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}
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define i64 @qux(i32 %x, i32 %v) nounwind {
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%y = lshr i32 %x, 31
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%r = udiv i32 %y, %v
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%z = sext i32 %r to i64
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ret i64 %z
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}
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