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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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JA_1 %bb.4, 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, 3, csr_64, implicit %rsp, implicit %eflags, implicit %ssp, implicit %rsp, implicit %rdi, implicit %rsi, implicit %rax, implicit-def %rax, implicit %sil, implicit-def %sil, implicit %si, implicit-def %si, implicit %esi, implicit-def %esi, implicit %rsi, implicit-def %rsi, implicit %dil, implicit-def %dil, implicit %di, implicit-def %di, implicit %edi, implicit-def %edi, implicit %rdi, implicit-def %rdi, implicit %ah, implicit-def %ah, implicit %al, implicit-def %al, implicit %ax, implicit-def %ax, implicit %eax, implicit-def %eax
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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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JA_1 %bb.3, 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: %rax, %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 = MOV32ri64 123, implicit-def %rax
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RET 0, %rax
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...
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