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74 lines
1.8 KiB
74 lines
1.8 KiB
4 months ago
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# RUN: llc -march=x86-64 -enable-shrink-wrap=true -start-after shrink-wrap -stop-after shrink-wrap -o - %s | FileCheck %s
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# This test ensures that the MIR parser parses the save and restore points in
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# the machine frame info correctly.
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--- |
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define i32 @foo(i32 %a, i32 %b) {
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entry:
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%tmp = alloca i32, align 4
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%tmp2 = icmp slt i32 %a, %b
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br i1 %tmp2, label %true, label %false
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true:
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store i32 %a, i32* %tmp, align 4
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%tmp4 = call i32 @doSomething(i32 0, i32* %tmp)
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br label %false
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false:
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%tmp.0 = phi i32 [ %tmp4, %true ], [ %a, %entry ]
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ret i32 %tmp.0
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}
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declare i32 @doSomething(i32, i32*)
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...
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---
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name: foo
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tracksRegLiveness: true
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liveins:
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- { reg: '%edi' }
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- { reg: '%esi' }
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# CHECK: frameInfo:
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# CHECK: savePoint: '%bb.2.true'
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# CHECK-NEXT: restorePoint: '%bb.2.true'
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# CHECK: stack
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frameInfo:
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maxAlignment: 4
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hasCalls: true
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savePoint: '%bb.2.true'
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restorePoint: '%bb.2.true'
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stack:
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- { id: 0, name: tmp, offset: 0, size: 4, alignment: 4 }
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body: |
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bb.0:
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successors: %bb.2.true, %bb.1
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liveins: %edi, %esi
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%eax = COPY %edi
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CMP32rr %eax, killed %esi, implicit-def %eflags
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JL_1 %bb.2.true, implicit killed %eflags
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bb.1:
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successors: %bb.3.false
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liveins: %eax
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JMP_1 %bb.3.false
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bb.2.true:
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successors: %bb.3.false
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liveins: %eax
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MOV32mr %stack.0.tmp, 1, _, 0, _, killed %eax
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ADJCALLSTACKDOWN64 0, 0, implicit-def %rsp, implicit-def dead %eflags, implicit %rsp
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%rsi = LEA64r %stack.0.tmp, 1, _, 0, _
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%edi = MOV32r0 implicit-def dead %eflags
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CALL64pcrel32 @doSomething, csr_64, implicit %rsp, implicit %edi, implicit %rsi, implicit-def %rsp, implicit-def %eax
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ADJCALLSTACKUP64 0, 0, implicit-def %rsp, implicit-def dead %eflags, implicit %rsp
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bb.3.false:
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liveins: %eax
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RETQ %eax
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...
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