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3b205175ea
present in the bottom of the CFG triangle, as the transformation isn't ever valuable if the branch can't be eliminated. Also, unify some heuristics between SimplifyCFG's multiple if-converters, for consistency. This fixes rdar://10627242. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147630 91177308-0d34-0410-b5e6-96231b3b80d8
42 lines
834 B
LLVM
42 lines
834 B
LLVM
; RUN: opt < %s -simplifycfg -S | FileCheck %s
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; PR3354
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; Do not merge bb1 into the entry block, it might trap.
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@G = extern_weak global i32
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; CHECK: @test(
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; CHECK: br i1 %tmp25
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; CHECK: bb1:
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; CHECK: sdiv
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define i32 @test(i32 %tmp21, i32 %tmp24) {
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%tmp25 = icmp sle i32 %tmp21, %tmp24
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br i1 %tmp25, label %bb2, label %bb1
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bb1: ; preds = %bb
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%tmp26 = icmp sgt i32 sdiv (i32 -32768, i32 ptrtoint (i32* @G to i32)), 0
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br i1 %tmp26, label %bb6, label %bb2
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bb2:
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ret i32 42
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bb6:
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ret i32 927
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}
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; CHECK: @test2(
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; CHECK: br i1 %tmp34
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; CHECK: bb5:
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; CHECK: sdiv
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define i32 @test2(i32 %tmp21, i32 %tmp24, i1 %tmp34) {
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br i1 %tmp34, label %bb5, label %bb6
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bb5: ; preds = %bb4
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br i1 icmp sgt (i32 sdiv (i32 32767, i32 ptrtoint (i32* @G to i32)), i32 0), label %bb6, label %bb7
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bb6:
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ret i32 42
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bb7:
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ret i32 927
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}
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