86 lines
2.4 KiB
Plaintext
86 lines
2.4 KiB
Plaintext
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# RUN: llc -mtriple x86_64-- -verify-machineinstrs -run-pass branch-folder -o - %s | FileCheck %s
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# Check the TCRETURNdi64cc optimization.
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--- |
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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define i64 @test(i64 %arg, i8* %arg1) optsize {
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%tmp = icmp ult i64 %arg, 100
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br i1 %tmp, label %1, label %4
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%tmp3 = icmp ult i64 %arg, 10
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br i1 %tmp3, label %2, label %3
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%tmp5 = tail call i64 @f1(i8* %arg1, i64 %arg)
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ret i64 %tmp5
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%tmp7 = tail call i64 @f2(i8* %arg1, i64 %arg)
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ret i64 %tmp7
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ret i64 123
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}
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declare i64 @f1(i8*, i64)
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declare i64 @f2(i8*, i64)
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...
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---
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name: test
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tracksRegLiveness: true
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liveins:
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- { reg: '$rdi' }
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- { reg: '$rsi' }
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body: |
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bb.0:
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successors: %bb.1, %bb.4
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liveins: $rdi, $rsi
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$rax = COPY $rdi
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CMP64ri8 $rax, 99, implicit-def $eflags
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JCC_1 %bb.4, 7, implicit $eflags
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JMP_1 %bb.1
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; CHECK: bb.1:
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; CHECK-NEXT: successors: %bb.2({{[^)]+}}){{$}}
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; CHECK-NEXT: liveins: $rax, $rsi
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; CHECK-NEXT: {{^ $}}
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; CHECK-NEXT: $rdi = COPY $rsi
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; CHECK-NEXT: $rsi = COPY $rax
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; CHECK-NEXT: CMP64ri8 $rax, 9, implicit-def $eflags
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; CHECK-NEXT: TCRETURNdi64cc @f1, 0, 6, csr_64, implicit $rsp, implicit $eflags, implicit $ssp, implicit $rsp, implicit $rdi, implicit $rsi, implicit $rdi, implicit-def $rdi, implicit $hsi, implicit-def $hsi, implicit $sih, implicit-def $sih, implicit $sil, implicit-def $sil, implicit $si, implicit-def $si, implicit $esi, implicit-def $esi, implicit $rsi, implicit-def $rsi, implicit $hdi, implicit-def $hdi, implicit $dih, implicit-def $dih, implicit $dil, implicit-def $dil, implicit $di, implicit-def $di, implicit $edi, implicit-def $edi
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bb.1:
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successors: %bb.2, %bb.3
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liveins: $rax, $rsi
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CMP64ri8 $rax, 9, implicit-def $eflags
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JCC_1 %bb.3, 7, implicit $eflags
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JMP_1 %bb.2
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bb.2:
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liveins: $rax, $rsi
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$rdi = COPY $rsi
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$rsi = COPY $rax
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TCRETURNdi64 @f1, 0, csr_64, implicit $rsp, implicit $rdi, implicit $rsi
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; CHECK: bb.2:
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; CHECK-NEXT: liveins: $rdi, $rsi
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; CHECK-NEXT: {{^ $}}
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; CHECK-NEXT: TCRETURNdi64 @f2, 0, csr_64, implicit $rsp, implicit $rdi, implicit $rsi
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bb.3:
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liveins: $rax, $rsi
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$rdi = COPY $rsi
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$rsi = COPY $rax
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TCRETURNdi64 @f2, 0, csr_64, implicit $rsp, implicit $rdi, implicit $rsi
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bb.4:
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dead $eax = MOV32ri 123, implicit-def $rax
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RET 0, $rax
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...
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