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55 lines
1.5 KiB
55 lines
1.5 KiB
4 months ago
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; RUN: opt %loadPolly -polly-optree -analyze < %s | FileCheck %s -match-full-lines
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; In the code below, %0 is known to be equal to the content of @c (constant 0).
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; Thus, in order to save a scalar dependency, forward-optree replaces
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; the use of %0 in Stmt_lor_end93 by a load from @c by changing the
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; access find from a scalar access to a array accesses.
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; llvm.org/PR48034 decribes a crash caused by the mid-processing change.
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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"
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target triple = "x86_64-unknown-linux-gnu"
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@c = external dso_local global i64, align 8
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define void @func() {
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entry:
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br label %lor.end
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while.cond.loopexit:
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%conv102.le = trunc i64 %xor101 to i8
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ret void
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lor.end:
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%tobool72.not = icmp eq i64 0, 0
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br i1 %tobool72.not, label %lor.rhs87, label %lor.end.thread
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lor.end.thread:
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br label %lor.rhs87
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lor.rhs87:
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%0 = phi i64 [ 0, %lor.end.thread ], [ 0, %lor.end ]
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store i64 %0, i64* @c, align 8
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%neg79 = xor i64 %0, -1
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br label %lor.end93
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lor.end93:
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%tobool93 = icmp ne i64 undef, 0
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%conv95 = zext i1 %tobool93 to i64
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%and100 = and i64 %conv95, undef
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%xor101 = xor i64 %and100, %neg79
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%xor103 = xor i64 %0, %conv95
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br label %while.cond.loopexit
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}
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; CHECK: Statistics {
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; CHECK: Reloads: 1
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; CHECK: }
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; CHECK: After statements {
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; CHECK: Stmt_lor_end93
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_lor_end93[] -> MemRef3[] };
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; CHECK-NEXT: new: { Stmt_lor_end93[] -> MemRef_c[0] };
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; CHECK: }
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