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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=x86_64-unknown-linux-gnu -verify-machineinstrs -O2 -run-pass=livevars,phi-node-elimination -o - %s | FileCheck %s
# Check that the COPY from [[MOV64rm]] is not killed, because there is a
# subsequent use of [[MOV64rm]] in the INLINEASM_BR instruction which should be
# killed instead.
--- |
; ModuleID = '<stdin>'
source_filename = "<stdin>"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
declare void @foo(ptr)
; Function Attrs: nounwind
define void @test1(ptr %arg, ptr %mem) #0 {
entry:
br label %loop
loop: ; preds = %loop, %entry
%a = phi ptr [ %arg, %entry ], [ %b, %loop ]
%b = load ptr, ptr %mem, align 8
call void @foo(ptr %a)
callbr void asm sideeffect "", "*m,!i"(ptr elementtype(i8) %b)
to label %end [label %loop]
end: ; preds = %loop
ret void
}
attributes #0 = { nounwind }
...
---
name: test1
alignment: 16
tracksRegLiveness: true
registers:
- { id: 0, class: gr64 }
- { id: 1, class: gr64 }
- { id: 2, class: gr64 }
- { id: 3, class: gr64 }
liveins:
- { reg: '$rdi', virtual-reg: '%2' }
- { reg: '$rsi', virtual-reg: '%3' }
frameInfo:
maxAlignment: 1
hasCalls: true
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: test1
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $rdi, $rsi
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY killed $rsi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY killed $rdi
; CHECK-NEXT: [[COPY2:%[0-9]+]]:gr64 = COPY killed [[COPY1]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.loop (ir-block-address-taken %ir-block.loop, inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000), %bb.1(0x00000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY3:%[0-9]+]]:gr64 = COPY killed [[COPY2]]
; CHECK-NEXT: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm [[COPY]], 1, $noreg, 0, $noreg :: (load (s64) from %ir.mem)
; CHECK-NEXT: ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
; CHECK-NEXT: $rdi = COPY killed [[COPY3]]
; CHECK-NEXT: CALL64pcrel32 target-flags(x86-plt) @foo, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp
; CHECK-NEXT: ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
; CHECK-NEXT: [[COPY4:%[0-9]+]]:gr64 = COPY [[MOV64rm]]
; CHECK-NEXT: INLINEASM_BR &"", 9 /* sideeffect mayload attdialect */, 262190 /* mem:m */, killed [[MOV64rm]], 1, $noreg, 0, $noreg, 13 /* imm */, blockaddress(@test1, %ir-block.loop)
; CHECK-NEXT: JMP_1 %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.end:
; CHECK-NEXT: RET 0
bb.0.entry:
liveins: $rdi, $rsi
%3:gr64 = COPY killed $rsi
%2:gr64 = COPY killed $rdi
bb.1.loop (ir-block-address-taken %ir-block.loop, inlineasm-br-indirect-target):
successors: %bb.2(0x80000000), %bb.1(0x00000000)
%0:gr64 = PHI %2, %bb.0, %1, %bb.1
%1:gr64 = MOV64rm %3, 1, $noreg, 0, $noreg :: (load (s64) from %ir.mem)
ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
$rdi = COPY killed %0
CALL64pcrel32 target-flags(x86-plt) @foo, csr_64, implicit $rsp, implicit $ssp, implicit killed $rdi, implicit-def $rsp, implicit-def $ssp
ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp
INLINEASM_BR &"", 9 /* sideeffect mayload attdialect */, 262190 /* mem:m */, %1, 1, $noreg, 0, $noreg, 13 /* imm */, blockaddress(@test1, %ir-block.loop)
JMP_1 %bb.2
bb.2.end:
RET 0
...
|
