d391e4fe84
Be more consistent in the naming convention for the various RET instructions to specify in terms of bitwidth. Helps prevent future scheduler model mismatches like those that were only addressed in D44687. Differential Revision: https://reviews.llvm.org/D113302
80 lines
1.8 KiB
YAML
80 lines
1.8 KiB
YAML
# RUN: llc -mtriple=x86_64-- -verify-machineinstrs -run-pass block-placement -o - %s | FileCheck %s
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# Check the conditional jump in bb.1 is changed to unconditional after block placement swaps bb.2 and bb.3.
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--- |
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@a = external global i16
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@b = external global i32
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declare void @dummy1()
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declare void @dummy2()
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declare void @dummy3()
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; Function Attrs: nounwind
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define void @f2() {
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br i1 undef, label %bb1, label %bb3
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bb1:
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call void @dummy1()
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call void @dummy1()
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call void @dummy1()
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br i1 undef, label %bb2, label %bb2
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bb2:
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call void @dummy2()
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call void @dummy2()
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call void @dummy2()
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br label %bb4
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bb3:
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call void @dummy3()
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call void @dummy3()
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call void @dummy3()
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br label %bb2
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bb4:
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ret void
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}
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...
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---
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# CHECK-LABEL: name: f2
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# CHECK: bb.1:
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# CHECK: JMP_1 %bb.2
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# CHECK: bb.3:
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# CHECK: bb.2:
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name: f2
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body: |
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bb.0 (%ir-block.0):
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successors: %bb.1(50), %bb.3(50)
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JCC_1 %bb.1, 2, implicit $eflags
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JMP_1 %bb.3
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bb.1:
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successors: %bb.2(100)
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CALL64pcrel32 @dummy1, csr_64, implicit $rsp, implicit-def $rsp
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CALL64pcrel32 @dummy1, csr_64, implicit $rsp, implicit-def $rsp
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CALL64pcrel32 @dummy1, csr_64, implicit $rsp, implicit-def $rsp
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JCC_1 %bb.2, 5, implicit $eflags
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bb.2:
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successors: %bb.4(100)
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CALL64pcrel32 @dummy2, csr_64, implicit $rsp, implicit-def $rsp
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CALL64pcrel32 @dummy2, csr_64, implicit $rsp, implicit-def $rsp
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CALL64pcrel32 @dummy2, csr_64, implicit $rsp, implicit-def $rsp
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JMP_1 %bb.4
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bb.3:
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successors: %bb.2(100)
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CALL64pcrel32 @dummy3, csr_64, implicit $rsp, implicit-def $rsp
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CALL64pcrel32 @dummy3, csr_64, implicit $rsp, implicit-def $rsp
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CALL64pcrel32 @dummy3, csr_64, implicit $rsp, implicit-def $rsp
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JMP_1 %bb.2
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bb.4:
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RET64
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...
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