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Right, instcombine cannot remove ((X >> C) << C) if it's signed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7790 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -87,9 +87,9 @@ uint %test14(uint %A) {
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%D = shl uint %C, ubyte 4 ;; D = ((B | 1234) << 4) === ((B << 4)|(1234 << 4)
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ret uint %D
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}
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int %test14a(int %A) {
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%B = shl int %A, ubyte 4
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%C = and int %B, -1234
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%D = shr int %C, ubyte 4 ;; D = ((B | 1234) << 4) === ((B << 4)|(1234 << 4)
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ret int %D
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uint %test14a(uint %A) {
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%B = shl uint %A, ubyte 4
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%C = and uint %B, 1234
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%D = shr uint %C, ubyte 4 ;; D = ((B | 1234) << 4) === ((B << 4)|(1234 << 4)
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ret uint %D
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}
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