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|
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -run-pass=regallocfast -verify-machineinstrs %s -o - | FileCheck %s
--- |
; ModuleID = 'x.c'
source_filename = "x.c"
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"
; Function Attrs: noinline nounwind optnone
define dso_local i32 @main() #0 {
entry:
%retval = alloca i32, align 4
%x = alloca i32, align 4
store i32 0, ptr %retval, align 4
store i32 123, ptr %x, align 4
%0 = callbr i32 asm "mov $1, $0\0A\09jmp ${2:l}", "=r,r,!i,~{dirflag},~{fpsr},~{flags}"(i32 45) #2
to label %asm.fallthrough [label %label.split], !srcloc !5
asm.fallthrough: ; preds = %entry
store i32 %0, ptr %x, align 4
store i32 6, ptr %x, align 4
br label %label
label: ; preds = %asm.fallthrough, %label.split
%1 = load i32, ptr %x, align 4
ret i32 %1
label.split: ; preds = %entry
%2 = call i32 @llvm.callbr.landingpad.i32(i32 %0)
store i32 %2, ptr %x, align 4
br label %label
}
; Function Attrs: nomerge nounwind
declare i32 @llvm.callbr.landingpad.i32(i32) #1
attributes #0 = { noinline nounwind optnone "frame-pointer"="all" "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nomerge nounwind }
attributes #2 = { nounwind memory(none) }
!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"frame-pointer", i32 2}
!4 = !{!"clang version 17.0.0 (git@github.com:llvm/llvm-project.git cf86855c4453d029a9b9ed8c4c4c18cefc1bc895)"}
!5 = !{i64 166, i64 179}
...
---
name: main
alignment: 16
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
callsEHReturn: false
callsUnwindInit: false
hasEHCatchret: false
hasEHScopes: false
hasEHFunclets: false
debugInstrRef: false
failsVerification: false
tracksDebugUserValues: false
registers:
- { id: 0, class: gr32, preferred-register: '' }
- { id: 1, class: gr32, preferred-register: '' }
- { id: 2, class: gr32, preferred-register: '' }
- { id: 3, class: gr32, preferred-register: '' }
- { id: 4, class: gr32, preferred-register: '' }
- { id: 5, class: gr32, preferred-register: '' }
- { id: 6, class: gr32, preferred-register: '' }
liveins: []
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 4
adjustsStack: false
hasCalls: false
stackProtector: ''
functionContext: ''
maxCallFrameSize: 4294967295
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
hasTailCall: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack:
- { id: 0, name: retval, type: default, offset: 0, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
- { id: 1, name: x, type: default, offset: 0, size: 4, alignment: 4,
stack-id: default, callee-saved-register: '', callee-saved-restored: true,
debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites: []
debugValueSubstitutions: []
constants: []
machineFunctionInfo: {}
body: |
; CHECK-LABEL: name: main
; CHECK: bb.0.entry:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: MOV32mi %stack.0.retval, 1, $noreg, 0, $noreg, 0 :: (store (s32) into %ir.retval)
; CHECK-NEXT: MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 123 :: (store (s32) into %ir.x)
; CHECK-NEXT: renamable $eax = MOV32ri 45
; CHECK-NEXT: INLINEASM_BR &"mov $1, $0\0A\09jmp ${2:l}", 0 /* attdialect */, 2359306 /* regdef:GR32 */, def renamable $eax, 2359305 /* reguse:GR32 */, killed renamable $eax, 13 /* imm */, %bb.3, 12 /* clobber */, implicit-def dead early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def dead early-clobber $eflags, !5
; CHECK-NEXT: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $eax :: (store (s32) into %stack.3)
; CHECK-NEXT: MOV32mr %stack.2, 1, $noreg, 0, $noreg, killed $eax :: (store (s32) into %stack.2)
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1.asm.fallthrough:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $eax = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load (s32) from %stack.2)
; CHECK-NEXT: MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, renamable $eax :: (store (s32) into %ir.x)
; CHECK-NEXT: MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 6 :: (store (s32) into %ir.x)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2.label:
; CHECK-NEXT: renamable $eax = MOV32rm %stack.1.x, 1, $noreg, 0, $noreg :: (load (s32) from %ir.x)
; CHECK-NEXT: RET64 implicit killed $eax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3.label.split (machine-block-address-taken, inlineasm-br-indirect-target):
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $eax
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $eax :: (store (s32) into %stack.3)
; CHECK-NEXT: $eax = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %stack.3)
; CHECK-NEXT: MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, killed renamable $eax :: (store (s32) into %ir.x)
; CHECK-NEXT: JMP_1 %bb.2
bb.0.entry:
successors: %bb.1(0x40000000), %bb.3(0x40000000)
MOV32mi %stack.0.retval, 1, $noreg, 0, $noreg, 0 :: (store (s32) into %ir.retval)
MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 123 :: (store (s32) into %ir.x)
%2:gr32 = MOV32ri 45
INLINEASM_BR &"mov $1, $0\0A\09jmp ${2:l}", 0 /* attdialect */, 2359306 /* regdef:GR32 */, def %1, 2359305 /* reguse:GR32 */, %2, 13 /* imm */, %bb.3, 12 /* clobber */, implicit-def early-clobber $df, 12 /* clobber */, implicit-def early-clobber $fpsw, 12 /* clobber */, implicit-def early-clobber $eflags, !5
%0:gr32 = COPY %1
JMP_1 %bb.1
bb.1.asm.fallthrough:
successors: %bb.2(0x80000000)
MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, %0 :: (store (s32) into %ir.x)
MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 6 :: (store (s32) into %ir.x)
bb.2.label:
%6:gr32 = MOV32rm %stack.1.x, 1, $noreg, 0, $noreg :: (load (s32) from %ir.x)
$eax = COPY %6
RET64 implicit $eax
bb.3.label.split (machine-block-address-taken, inlineasm-br-indirect-target):
successors: %bb.2(0x80000000)
%3:gr32 = COPY %1
MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, %3 :: (store (s32) into %ir.x)
JMP_1 %bb.2
...
|
