e3c759bd58
Loop canonicalization may end up deleting blocks from CFG. And Scalar Evolution may still keep cached referenced to those blocks unless updated properly.
36 lines
1.3 KiB
LLVM
36 lines
1.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -indvars -loop-load-elim < %s 2>&1 | FileCheck %s
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2"
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target triple = "x86_64-unknown-linux-gnu"
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define void @test() {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[A_01:%.*]] = phi i16 [ undef, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[INC]] = add nsw i16 [[A_01]], 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp sle i16 [[INC]], 2
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; CHECK-NEXT: [[OR_COND:%.*]] = and i1 false, [[CMP]]
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; CHECK-NEXT: br i1 [[OR_COND]], label [[FOR_BODY]], label [[FOR_END:%.*]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.cond: ; preds = %for.body
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%a.0 = phi i16 [ %inc, %for.body ]
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%cmp = icmp sle i16 %a.0, 2
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond, %entry
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%a.01 = phi i16 [ undef, %entry ], [ %a.0, %for.cond ]
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%inc = add nsw i16 %a.01, 1
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br i1 false, label %for.cond, label %for.end
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for.end: ; preds = %for.body, %for.cond
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ret void
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}
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