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| 1 | +# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| 2 | +# RUN: llc -run-pass=regallocfast -verify-machineinstrs %s -o - | FileCheck %s |
| 3 | +--- | |
| 4 | + ; ModuleID = 'x.c' |
| 5 | + source_filename = "x.c" |
| 6 | + target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| 7 | + target triple = "x86_64-unknown-linux-gnu" |
| 8 | + |
| 9 | + ; Function Attrs: noinline nounwind optnone |
| 10 | + define dso_local i32 @main() #0 { |
| 11 | + entry: |
| 12 | + %retval = alloca i32, align 4 |
| 13 | + %x = alloca i32, align 4 |
| 14 | + store i32 0, ptr %retval, align 4 |
| 15 | + store i32 123, ptr %x, align 4 |
| 16 | + %0 = callbr i32 asm "mov $1, $0\0A\09jmp ${2:l}", "=r,r,!i,~{dirflag},~{fpsr},~{flags}"(i32 45) #2 |
| 17 | + to label %asm.fallthrough [label %label.split], !srcloc !5 |
| 18 | + |
| 19 | + asm.fallthrough: ; preds = %entry |
| 20 | + store i32 %0, ptr %x, align 4 |
| 21 | + store i32 6, ptr %x, align 4 |
| 22 | + br label %label |
| 23 | + |
| 24 | + label: ; preds = %asm.fallthrough, %label.split |
| 25 | + %1 = load i32, ptr %x, align 4 |
| 26 | + ret i32 %1 |
| 27 | + |
| 28 | + label.split: ; preds = %entry |
| 29 | + %2 = call i32 @llvm.callbr.landingpad.i32(i32 %0) |
| 30 | + store i32 %2, ptr %x, align 4 |
| 31 | + br label %label |
| 32 | + } |
| 33 | + |
| 34 | + ; Function Attrs: nomerge nounwind |
| 35 | + declare i32 @llvm.callbr.landingpad.i32(i32) #1 |
| 36 | + |
| 37 | + 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" } |
| 38 | + attributes #1 = { nomerge nounwind } |
| 39 | + attributes #2 = { nounwind memory(none) } |
| 40 | + |
| 41 | + !llvm.module.flags = !{!0, !1, !2, !3} |
| 42 | + !llvm.ident = !{!4} |
| 43 | + |
| 44 | + !0 = !{i32 1, !"wchar_size", i32 4} |
| 45 | + !1 = !{i32 8, !"PIC Level", i32 2} |
| 46 | + !2 = !{i32 7, !"PIE Level", i32 2} |
| 47 | + !3 = !{i32 7, !"frame-pointer", i32 2} |
| 48 | + !4 = !{!"clang version 17.0.0 ([email protected]:llvm/llvm-project.git cf86855c4453d029a9b9ed8c4c4c18cefc1bc895)"} |
| 49 | + !5 = !{i64 166, i64 179} |
| 50 | + |
| 51 | +... |
| 52 | +--- |
| 53 | +name: main |
| 54 | +alignment: 16 |
| 55 | +exposesReturnsTwice: false |
| 56 | +legalized: false |
| 57 | +regBankSelected: false |
| 58 | +selected: false |
| 59 | +failedISel: false |
| 60 | +tracksRegLiveness: true |
| 61 | +hasWinCFI: false |
| 62 | +callsEHReturn: false |
| 63 | +callsUnwindInit: false |
| 64 | +hasEHCatchret: false |
| 65 | +hasEHScopes: false |
| 66 | +hasEHFunclets: false |
| 67 | +debugInstrRef: false |
| 68 | +failsVerification: false |
| 69 | +tracksDebugUserValues: false |
| 70 | +registers: |
| 71 | + - { id: 0, class: gr32, preferred-register: '' } |
| 72 | + - { id: 1, class: gr32, preferred-register: '' } |
| 73 | + - { id: 2, class: gr32, preferred-register: '' } |
| 74 | + - { id: 3, class: gr32, preferred-register: '' } |
| 75 | + - { id: 4, class: gr32, preferred-register: '' } |
| 76 | + - { id: 5, class: gr32, preferred-register: '' } |
| 77 | + - { id: 6, class: gr32, preferred-register: '' } |
| 78 | +liveins: [] |
| 79 | +frameInfo: |
| 80 | + isFrameAddressTaken: false |
| 81 | + isReturnAddressTaken: false |
| 82 | + hasStackMap: false |
| 83 | + hasPatchPoint: false |
| 84 | + stackSize: 0 |
| 85 | + offsetAdjustment: 0 |
| 86 | + maxAlignment: 4 |
| 87 | + adjustsStack: false |
| 88 | + hasCalls: false |
| 89 | + stackProtector: '' |
| 90 | + functionContext: '' |
| 91 | + maxCallFrameSize: 4294967295 |
| 92 | + cvBytesOfCalleeSavedRegisters: 0 |
| 93 | + hasOpaqueSPAdjustment: false |
| 94 | + hasVAStart: false |
| 95 | + hasMustTailInVarArgFunc: false |
| 96 | + hasTailCall: false |
| 97 | + localFrameSize: 0 |
| 98 | + savePoint: '' |
| 99 | + restorePoint: '' |
| 100 | +fixedStack: [] |
| 101 | +stack: |
| 102 | + - { id: 0, name: retval, type: default, offset: 0, size: 4, alignment: 4, |
| 103 | + stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| 104 | + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| 105 | + - { id: 1, name: x, type: default, offset: 0, size: 4, alignment: 4, |
| 106 | + stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| 107 | + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| 108 | +callSites: [] |
| 109 | +debugValueSubstitutions: [] |
| 110 | +constants: [] |
| 111 | +machineFunctionInfo: {} |
| 112 | +body: | |
| 113 | + ; CHECK-LABEL: name: main |
| 114 | + ; CHECK: bb.0.entry: |
| 115 | + ; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000) |
| 116 | + ; CHECK-NEXT: {{ $}} |
| 117 | + ; CHECK-NEXT: MOV32mi %stack.0.retval, 1, $noreg, 0, $noreg, 0 :: (store (s32) into %ir.retval) |
| 118 | + ; CHECK-NEXT: MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 123 :: (store (s32) into %ir.x) |
| 119 | + ; CHECK-NEXT: renamable $eax = MOV32ri 45 |
| 120 | + ; 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 |
| 121 | + ; CHECK-NEXT: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $eax :: (store (s32) into %stack.3) |
| 122 | + ; CHECK-NEXT: MOV32mr %stack.2, 1, $noreg, 0, $noreg, killed $eax :: (store (s32) into %stack.2) |
| 123 | + ; CHECK-NEXT: JMP_1 %bb.1 |
| 124 | + ; CHECK-NEXT: {{ $}} |
| 125 | + ; CHECK-NEXT: bb.1.asm.fallthrough: |
| 126 | + ; CHECK-NEXT: successors: %bb.2(0x80000000) |
| 127 | + ; CHECK-NEXT: {{ $}} |
| 128 | + ; CHECK-NEXT: $eax = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load (s32) from %stack.2) |
| 129 | + ; CHECK-NEXT: MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, renamable $eax :: (store (s32) into %ir.x) |
| 130 | + ; CHECK-NEXT: MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 6 :: (store (s32) into %ir.x) |
| 131 | + ; CHECK-NEXT: {{ $}} |
| 132 | + ; CHECK-NEXT: bb.2.label: |
| 133 | + ; CHECK-NEXT: renamable $eax = MOV32rm %stack.1.x, 1, $noreg, 0, $noreg :: (load (s32) from %ir.x) |
| 134 | + ; CHECK-NEXT: RET64 implicit killed $eax |
| 135 | + ; CHECK-NEXT: {{ $}} |
| 136 | + ; CHECK-NEXT: bb.3.label.split (machine-block-address-taken, inlineasm-br-indirect-target): |
| 137 | + ; CHECK-NEXT: successors: %bb.2(0x80000000) |
| 138 | + ; CHECK-NEXT: {{ $}} |
| 139 | + ; FIXME: this is a load from a stack slot that hasn't been stored to yet! |
| 140 | + ; CHECK-NEXT: $eax = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %stack.3) |
| 141 | + ; CHECK-NEXT: MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, killed renamable $eax :: (store (s32) into %ir.x) |
| 142 | + ; CHECK-NEXT: JMP_1 %bb.2 |
| 143 | + bb.0.entry: |
| 144 | + successors: %bb.1(0x40000000), %bb.3(0x40000000) |
| 145 | +
|
| 146 | + MOV32mi %stack.0.retval, 1, $noreg, 0, $noreg, 0 :: (store (s32) into %ir.retval) |
| 147 | + MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 123 :: (store (s32) into %ir.x) |
| 148 | + %2:gr32 = MOV32ri 45 |
| 149 | + 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 |
| 150 | + %0:gr32 = COPY %1 |
| 151 | + JMP_1 %bb.1 |
| 152 | +
|
| 153 | + bb.1.asm.fallthrough: |
| 154 | + successors: %bb.2(0x80000000) |
| 155 | +
|
| 156 | + MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, %0 :: (store (s32) into %ir.x) |
| 157 | + MOV32mi %stack.1.x, 1, $noreg, 0, $noreg, 6 :: (store (s32) into %ir.x) |
| 158 | +
|
| 159 | + bb.2.label: |
| 160 | + %6:gr32 = MOV32rm %stack.1.x, 1, $noreg, 0, $noreg :: (load (s32) from %ir.x) |
| 161 | + $eax = COPY %6 |
| 162 | + RET64 implicit $eax |
| 163 | +
|
| 164 | + bb.3.label.split (machine-block-address-taken, inlineasm-br-indirect-target): |
| 165 | + successors: %bb.2(0x80000000) |
| 166 | +
|
| 167 | + %3:gr32 = COPY %1 |
| 168 | + MOV32mr %stack.1.x, 1, $noreg, 0, $noreg, %3 :: (store (s32) into %ir.x) |
| 169 | + JMP_1 %bb.2 |
| 170 | +
|
| 171 | +... |
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