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ad75364815
non-profitable commute using outdated info.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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157038 91177308-0d34-0410-b5e6-96231b3b80d8
17 lines
538 B
LLVM
17 lines
538 B
LLVM
; RUN: llc < %s -mtriple=x86_64-apple-macosx -pre-RA-sched=source | FileCheck %s
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; Teach two-address pass to update the "source" map so it doesn't perform a
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; non-profitable commute using outdated info. The test case would still fail
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; because of poor pre-RA schedule. That will be fixed by MI scheduler.
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; rdar://11472010
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define i32 @t(i32 %mask) nounwind readnone ssp {
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entry:
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; CHECK: t:
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; CHECK-NOT: mov
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%sub = add i32 %mask, -65535
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%shr = lshr i32 %sub, 23
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%and = and i32 %mask, 1
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%add = add i32 %shr, %and
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ret i32 %add
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}
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