5d5b30649a
If nothing is executed we can bail out early. Otherwise we can use the constraints that ensure at least one statement is executed for simplification. llvm-svn: 245585
33 lines
1.5 KiB
LLVM
33 lines
1.5 KiB
LLVM
; RUN: opt %loadPolly -polly-detect-unprofitable -polly-no-early-exit -basicaa -polly-codegen -verify-loop-info < %s -S | FileCheck %s
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target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-a0:0-n32"
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@A = common global [1536 x float] zeroinitializer
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; This test case used to fail, because we did not add the newly generated basic
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; block %polly.start as a basic block to the surrounding loop.
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define void @foo() nounwind {
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entry:
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br i1 undef, label %while.cond14.preheader, label %for.body7.single_entry.single_entry
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while.cond14.preheader: ; preds = %for.inc02, %for.body7.single_entry.single_entry, %entry
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ret void
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for.body7.single_entry.single_entry: ; preds = %for.inc02, %entry
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br i1 undef, label %while.cond14.preheader, label %while.body
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while.body: ; preds = %while.body, %for.body7.single_entry.single_entry
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%indvar35 = phi i32 [ %0, %while.body ], [ 0, %for.body7.single_entry.single_entry ]
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%ptr = getelementptr [1536 x float], [1536 x float]* @A, i64 0, i32 %indvar35
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store float undef, float* %ptr
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%0 = add i32 %indvar35, 1
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%exitcond2 = icmp eq i32 %0, 42
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br i1 %exitcond2, label %for.inc02, label %while.body
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for.inc02: ; preds = %while.body
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br i1 undef, label %while.cond14.preheader, label %for.body7.single_entry.single_entry
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}
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; CHECK: polly.split_new_and_old
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; CHECK: br i1 true, label %polly.start, label %while.body
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