remove-implicit-use.mir
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# RUN: llc -mtriple=powerpc64le-unknown-unknown -start-after=ppc-mi-peepholes \
# RUN: -stop-before=ppc-expand-isel -verify-machineinstrs %s -o - | FileCheck %s
--- |
; ModuleID = 'a.ll'
source_filename = "a.c"
target datalayout = "e-m:e-i64:64-n32:64"
target triple = "powerpc64le-unknown-linux-gnu"
; Function Attrs: norecurse nounwind readnone
define signext i32 @test(i32 signext %a, i32 signext %b, i32 signext %c) local_unnamed_addr #0 {
entry:
%cmp = icmp sgt i32 %a, %b
%add = add nsw i32 %c, %b
%cond = select i1 %cmp, i32 %a, i32 %add
ret i32 %cond
}
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"PIC Level", i32 2}
!2 = !{!"clang version 8.0.0 (trunk 347251)"}
...
---
name: test
alignment: 16
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers: []
liveins:
- { reg: '$x3', virtual-reg: '' }
- { reg: '$x4', virtual-reg: '' }
- { reg: '$x5', virtual-reg: '' }
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 0
adjustsStack: false
hasCalls: false
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack: []
constants: []
body: |
bb.0.entry:
liveins: $x3, $x5
renamable $r4 = LI 0
renamable $r5 = nsw ADD4 killed renamable $r5, renamable $r5, implicit $x5
renamable $cr0 = CMPW renamable $r3, killed renamable $r4, implicit $x4
; CHECK: ADD4
; CHECK-NOT: implicit $x4
renamable $r3 = ISEL killed renamable $r3, killed renamable $r5, killed renamable $cr0gt, implicit $cr0, implicit $x3
renamable $x3 = EXTSW_32_64 killed renamable $r3
BLR8 implicit $lr8, implicit $rm, implicit killed $x3
...