2307f86c47
Summary: After region statements now also have instruction lists, this is a straightforward extension. Reviewers: Meinersbur, bollu, singam-sanjay, gareevroman Reviewed By: Meinersbur Subscribers: hfinkel, pollydev, llvm-commits Tags: #polly Differential Revision: https://reviews.llvm.org/D37298 llvm-svn: 312249
57 lines
1.2 KiB
LLVM
57 lines
1.2 KiB
LLVM
; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
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;
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; Ensure we do not move instructions from region statements in case the
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; instruction to move loads from an array which is also written to from
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; within the region. This is necessary as complex region statements may prevent
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; us from detecting possible memory conflicts.
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;
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; for (int j = 0; j < n; j += 1) {
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; bodyA:
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; double val = A[0];
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; if (cond)
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;
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; bodyA_true:
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; A[0] = 42;
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;
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; bodyB:
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; A[0] = val;
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; }
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;
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define void @func(i32 %n, double* noalias nonnull %A) {
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entry:
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br label %for
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for:
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%j = phi i32 [0, %entry], [%j.inc, %inc]
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%j.cmp = icmp slt i32 %j, %n
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br i1 %j.cmp, label %bodyA, label %exit
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bodyA:
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%val = load double, double* %A
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%cond = fcmp oeq double 21.0, 21.0
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br i1 %cond, label %bodyA_true, label %bodyB
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bodyA_true:
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store double 42.0, double* %A
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br label %bodyB
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bodyB:
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store double %val, double* %A
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br label %bodyB_exit
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bodyB_exit:
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br label %inc
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inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %for
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exit:
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br label %return
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return:
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ret void
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}
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; CHECK: ForwardOpTree executed, but did not modify anything
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