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f51788e894
When simplifying a Phi to the unique value found incoming, check that there wasn't a Phi already created to break a cycle. If so, remove it. Resolves PR43541. Some additional nits included. llvm-svn: 374471
51 lines
1.7 KiB
LLVM
51 lines
1.7 KiB
LLVM
; RUN: opt -gvn-hoist -enable-mssa-loop-dependency -S < %s | FileCheck %s
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; REQUIRES: asserts
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%struct.job_pool.6.7 = type { i32 }
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; CHECK-LABEL: @f()
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define dso_local void @f() {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.end, %entry
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br label %for.body
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for.body: ; preds = %for.cond
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br label %if.end
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if.then: ; No predecessors!
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br label %if.end
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if.end: ; preds = %if.then, %for.body
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br i1 false, label %for.body12.lr.ph, label %for.end
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for.body12.lr.ph: ; preds = %if.end
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br label %for.body12
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for.body12: ; preds = %if.end40, %for.body12.lr.ph
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br label %if.then23
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if.then23: ; preds = %for.body12
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br i1 undef, label %if.then24, label %if.else
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if.then24: ; preds = %if.then23
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%0 = load %struct.job_pool.6.7*, %struct.job_pool.6.7** undef, align 8
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br label %if.end40
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if.else: ; preds = %if.then23
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%1 = load %struct.job_pool.6.7*, %struct.job_pool.6.7** undef, align 8
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br label %if.end40
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if.end40: ; preds = %if.else, %if.then24
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br i1 false, label %for.body12, label %for.cond9.for.end_crit_edge
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for.cond9.for.end_crit_edge: ; preds = %if.end40
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br label %for.end
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for.end: ; preds = %for.cond9.for.end_crit_edge, %if.end
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br i1 true, label %if.then45, label %for.cond
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if.then45: ; preds = %for.end
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ret void
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}
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