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b7a37e9680
As Sanjay suggested when he added the hook, PPC should return true from hasAndNotCompare. We have an efficient negated 'and' on PPC (which can feed a compare). Fixes PR27203. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280457 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
1.0 KiB
LLVM
42 lines
1.0 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-apple-darwin | FileCheck %s
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define i1 @and_cmp1(i32 %x, i32 %y) {
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; CHECK-LABEL: and_cmp1:
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; CHECK: andc [[REG1:r[0-9]+]], r4, r3
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; CHECK: cntlzw [[REG2:r[0-9]+]], [[REG1]]
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; CHECK: rlwinm r3, [[REG2]], 27, 31, 31
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; CHECK: blr
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%and = and i32 %x, %y
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%cmp = icmp eq i32 %and, %y
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ret i1 %cmp
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}
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define i1 @and_cmp_const(i32 %x) {
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; CHECK-LABEL: and_cmp_const:
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; CHECK: li [[REG1:r[0-9]+]], 43
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; CHECK: andc [[REG2:r[0-9]+]], [[REG1]], r3
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; CHECK: cntlzw [[REG3:r[0-9]+]], [[REG2]]
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; CHECK: rlwinm r3, [[REG3]], 27, 31, 31
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; CHECK: blr
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%and = and i32 %x, 43
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%cmp = icmp eq i32 %and, 43
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ret i1 %cmp
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}
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define i1 @foo(i32 %i) {
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; CHECK-LABEL: foo:
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; CHECK: lis [[REG1:r[0-9]+]], 4660
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; CHECK: ori [[REG2:r[0-9]+]], [[REG1]], 22136
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; CHECK: andc [[REG3:r[0-9]+]], [[REG2]], r3
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; CHECK: cntlzw [[REG4:r[0-9]+]], [[REG3]]
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; CHECK: rlwinm r3, [[REG4]], 27, 31, 31
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; CHECK: blr
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%and = and i32 %i, 305419896
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%cmp = icmp eq i32 %and, 305419896
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ret i1 %cmp
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}
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