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d922b35caa
Summary: We can't speculate around indirect branches: indirectbr and invoke. The callbr instruction needs to be included here. Reviewers: nickdesaulniers, manojgupta, chandlerc Reviewed By: chandlerc Subscribers: llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D66200 llvm-svn: 368873
45 lines
1.1 KiB
LLVM
45 lines
1.1 KiB
LLVM
; RUN: opt -S -passes=spec-phis %s
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; This testcase crashes during the speculate around PHIs pass. The pass however
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; results in no changes.
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define i32 @test1() {
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entry:
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callbr void asm sideeffect "", "X,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@test1, %return), i8* blockaddress(@test1, %f))
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to label %asm.fallthrough [label %return, label %f]
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asm.fallthrough:
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br label %return
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f:
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br label %return
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return:
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%retval.0 = phi i32 [ 0, %f ], [ 1, %asm.fallthrough ], [ 1, %entry ]
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ret i32 %retval.0
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}
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define void @test2() {
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entry:
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br label %tailrecurse
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tailrecurse:
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%call = tail call i32 @test3()
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%tobool1 = icmp eq i32 %call, 0
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callbr void asm sideeffect "", "X,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@test2, %test1.exit), i8* blockaddress(@test2, %f.i))
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to label %if.end6 [label %test1.exit, label %f.i]
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f.i:
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br label %test1.exit
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test1.exit:
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%retval.0.i = phi i1 [ false, %f.i ], [ true, %tailrecurse ]
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%brmerge = or i1 %tobool1, %retval.0.i
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br i1 %brmerge, label %if.end6, label %tailrecurse
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if.end6:
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ret void
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}
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declare i32 @test3()
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