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8936fc2e28
Fix by clearing the rewriter cache before deleting the trivially dead instructions. Also make InsertedExpressions use an AssertingVH to catch these bugs easier. llvm-svn: 72364
42 lines
1.4 KiB
LLVM
42 lines
1.4 KiB
LLVM
; RUN: llvm-as < %s | opt -indvars
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; PR4258
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
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target triple = "i386-linux-gnu"
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define void @0(i32*, i32*, i32, i32) nounwind {
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br i1 false, label %bb.nph1.preheader, label %.outer._crit_edge
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bb.nph1.preheader: ; preds = %4
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%smax = select i1 false, i32 -1, i32 0 ; <i32> [#uses=1]
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%tmp12 = sub i32 0, %smax ; <i32> [#uses=1]
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br label %bb.nph1
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bb.nph1: ; preds = %.outer, %bb.nph1.preheader
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br i1 false, label %bb.nph3.preheader, label %.outer
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bb.nph3.preheader: ; preds = %bb.nph1
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br label %bb.nph3
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bb.nph3: ; preds = %bb.nph3, %bb.nph3.preheader
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%indvar7 = phi i32 [ %indvar.next8, %bb.nph3 ], [ 0, %bb.nph3.preheader ] ; <i32> [#uses=3]
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%tmp9 = mul i32 %indvar7, -1 ; <i32> [#uses=1]
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%tmp13 = add i32 %tmp9, %tmp12 ; <i32> [#uses=1]
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%tmp14 = add i32 %tmp13, -2 ; <i32> [#uses=1]
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%5 = icmp sgt i32 %tmp14, 0 ; <i1> [#uses=1]
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%indvar.next8 = add i32 %indvar7, 1 ; <i32> [#uses=1]
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br i1 %5, label %bb.nph3, label %.outer.loopexit
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.outer.loopexit: ; preds = %bb.nph3
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%indvar7.lcssa = phi i32 [ %indvar7, %bb.nph3 ] ; <i32> [#uses=0]
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br label %.outer
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.outer: ; preds = %.outer.loopexit, %bb.nph1
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br i1 false, label %bb.nph1, label %.outer._crit_edge.loopexit
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.outer._crit_edge.loopexit: ; preds = %.outer
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br label %.outer._crit_edge
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.outer._crit_edge: ; preds = %.outer._crit_edge.loopexit, %4
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ret void
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}
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