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Imported Upstream version 5.18.0.205

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Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927
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2018-11-16 08:20:38 +00:00
parent 5cd5df71cc
commit 8e12397d70
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external/llvm/test/CodeGen/X86/2012-05-17-TwoAddressBug.ll vendored Normal file
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; RUN: llc < %s -mtriple=x86_64-apple-macosx -pre-RA-sched=source | FileCheck %s
; Teach two-address pass to update the "source" map so it doesn't perform a
; non-profitable commute using outdated info. The test case would still fail
; because of poor pre-RA schedule. That will be fixed by MI scheduler.
; rdar://11472010
define i32 @t(i32 %mask) nounwind readnone ssp {
entry:
; CHECK-LABEL: t:
; CHECK-NOT: mov
%sub = add i32 %mask, -65535
%shr = lshr i32 %sub, 23
%and = and i32 %mask, 1
%add = add i32 %shr, %and
ret i32 %add
}