ddebb703fc
In cases where an instruction (a call site, say) is RAUW'ed with some other value (this is possible via the `returned` attribute, for instance), we want the slot in UnknownInsts to point to the original Instruction we wanted to track, not the value it got replaced by. Fixes PR32587. This relands r301426. llvm-svn: 301814
26 lines
667 B
LLVM
26 lines
667 B
LLVM
; RUN: opt -S -licm -loop-unswitch < %s | FileCheck %s
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; This test checks for a crash. See PR32587.
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@global = external global i32
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declare i32 @f_1(i8, i32 returned)
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define i32 @f_0() {
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; CHECK-LABEL: @f_0(
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bb:
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br label %bb1
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bb1: ; preds = %bb3, %bb
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%tmp = load i32, i32* @global
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%tmp2 = select i1 false, i16 1, i16 0
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br label %bb3
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bb3: ; preds = %bb3, %bb1
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%tmp4 = phi i8 [ 0, %bb1 ], [ %tmp6, %bb3 ]
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%tmp5 = icmp eq i16 %tmp2, 0
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%tmp6 = select i1 %tmp5, i8 %tmp4, i8 1
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%tmp7 = tail call i32 @f_1(i8 %tmp6, i32 1)
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br i1 false, label %bb1, label %bb3
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}
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