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103 lines
2.9 KiB
LLVM
103 lines
2.9 KiB
LLVM
; Check that we don't crash on corner cases.
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; RUN: opt < %s -S -loop-unroll -unroll-max-iteration-count-to-analyze=1000 -unroll-threshold=10 -unroll-percent-dynamic-cost-saved-threshold=20 -o /dev/null
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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@known_constant = internal unnamed_addr constant [10 x i32] [i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1], align 16
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define void @foo1() {
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entry:
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br label %for.body
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for.body:
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%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
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%idx = zext i32 undef to i64
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%add.ptr = getelementptr inbounds i64, i64* null, i64 %idx
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%inc = add nuw nsw i64 %phi, 1
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%cmp = icmp ult i64 %inc, 999
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br i1 %cmp, label %for.body, label %for.exit
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for.exit:
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ret void
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}
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define void @foo2() {
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entry:
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br label %for.body
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for.body:
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%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
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%x = getelementptr i32, <4 x i32*> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1>
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%inc = add nuw nsw i64 %phi, 1
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%cmp = icmp ult i64 %inc, 999
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br i1 %cmp, label %for.body, label %for.exit
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for.exit:
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ret void
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}
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define void @cmp_undef() {
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entry:
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br label %for.body
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for.body: ; preds = %for.inc, %entry
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%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]
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%arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0
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%x1 = load i32, i32* %arrayidx1, align 4
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%cmp = icmp eq i32 %x1, undef
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br i1 %cmp, label %if.then, label %for.inc
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if.then: ; preds = %for.body
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br label %for.inc
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for.inc: ; preds = %for.body, %if.then
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%iv.1 = add nuw nsw i64 %iv.0, 1
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%exitcond = icmp eq i64 %iv.1, 10
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.inc
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ret void
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}
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define void @switch() {
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entry:
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br label %for.body
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for.body:
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%iv.0 = phi i64 [ 0, %entry ], [ %iv.1, %for.inc ]
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%arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %iv.0
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%x1 = load i32, i32* %arrayidx1, align 4
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switch i32 %x1, label %l1 [
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]
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l1:
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%x2 = add i32 %x1, 2
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br label %for.inc
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for.inc:
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%iv.1 = add nuw nsw i64 %iv.0, 1
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%exitcond = icmp eq i64 %iv.1, 10
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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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define <4 x i32> @vec_load() {
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entry:
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br label %for.body
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for.body:
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%phi = phi i64 [ 0, %entry ], [ %inc, %for.body ]
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%vec_phi = phi <4 x i32> [ <i32 0, i32 0, i32 0, i32 0>, %entry ], [ %r, %for.body ]
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%arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* @known_constant, i64 0, i64 %phi
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%bc = bitcast i32* %arrayidx to <4 x i32>*
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%x = load <4 x i32>, < 4 x i32>* %bc, align 4
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%r = add <4 x i32> %x, %vec_phi
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%inc = add nuw nsw i64 %phi, 1
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%cmp = icmp ult i64 %inc, 999
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br i1 %cmp, label %for.body, label %for.exit
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for.exit:
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ret <4 x i32> %r
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}
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