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5cbd37e505
and high-bits values in ways that weren't correct for integer types wider than 64 bits. This fixes a miscompile in PPMacroExpansion.cpp in clang on x86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78295 91177308-0d34-0410-b5e6-96231b3b80d8
13 lines
375 B
LLVM
13 lines
375 B
LLVM
; RUN: llvm-as < %s | llc -march=x86-64 | FileCheck %s
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; CHECK: movq $-65535, %rax
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; DAGCombiner should fold this to a simple constant.
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define i64 @foo(i192 %a) nounwind {
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%t = or i192 %a, -22300404916163702203072254898040925442801665
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%s = and i192 %t, -22300404916163702203072254898040929737768960
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%u = lshr i192 %s, 128
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%v = trunc i192 %u to i64
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ret i64 %v
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}
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