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33532e2be5
Loop simplify form should always be checked because logic of propagateStoredValueToLoadUsers relies on it (in particular, it requires preheader). Reviewed By: Fedor Sergeev, Florian Hahn Differential Revision: https://reviews.llvm.org/D77775
26 lines
993 B
LLVM
26 lines
993 B
LLVM
; RUN: opt -passes=loop-load-elim -S < %s | FileCheck %s
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; Make sure it doesn't crash in new pass manager due to missing preheader.
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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define void @test(i32* noalias nocapture %A, i32* noalias nocapture readonly %B, i64 %N, i1 %C) {
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entry:
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br i1 %C, label %for.body, label %for.end
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; CHECK: test
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%load = load i32, i32* %arrayidx, align 4
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%arrayidx2 = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
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%load_1 = load i32, i32* %arrayidx2, align 4
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%add = add i32 %load_1, %load
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%arrayidx_next = getelementptr inbounds i32, i32* %A, i64 %indvars.iv.next
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store i32 %add, i32* %arrayidx_next, align 4
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%exitcond = icmp eq i64 %indvars.iv.next, %N
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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