fac9472593
Reland #171963, #172639 and #173444, they are reverted in 86b9f90b9574b3a7d15d28a91f6316459dcfa046 because of introducing non-determinism in compiles. The non-determinism has been fixed in 9b8addffa70cee5b2acc5454712d9cf78ce45710.
31 lines
808 B
LLVM
31 lines
808 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes="simplifycfg<forward-switch-cond;no-keep-loops>" < %s | FileCheck %s
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define i8 @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[LOOP2:%.*]]
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; CHECK: loop2:
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; CHECK-NEXT: [[PHI2:%.*]] = phi i8 [ [[SPEC_SELECT:%.*]], [[LOOP2]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i8 [[PHI2]], 0
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; CHECK-NEXT: [[SPEC_SELECT]] = select i1 [[COND]], i8 0, i8 [[PHI2]]
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; CHECK-NEXT: br label [[LOOP2]]
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;
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entry:
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br label %loop
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loop:
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%phi1 = phi i8 [ 0, %entry ], [ %phi2, %loop2 ]
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br label %loop2
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loop2:
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%phi2 = phi i8 [ %phi1, %loop ], [ 0, %loop2 ]
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switch i8 %phi2, label %loop [
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i8 0, label %loop2
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i8 1, label %exit
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]
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exit:
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ret i8 0
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}
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