0ece2050da
Returning true from this method for PCREL_WRAPPER and PCREL_OFFSET avoids problems when a PCREL_OFFSET node ends up with a freeze operand, which is not handled or expected by the backend. Fixes #60107 Reviewed By: uweigand, RKSimon Differential Revision: https://reviews.llvm.org/D142971
29 lines
1.0 KiB
LLVM
29 lines
1.0 KiB
LLVM
; RUN: llc -mtriple=s390x-linux-gnu -mcpu=zEC12 < %s | FileCheck %s
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;
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; Check that DAGCombiner doesn't cause a crash by eventually producing a
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; PCREL_OFFSET node with a freeze operand.
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@a = dso_local global [6 x [6 x [3 x i8]]] zeroinitializer, align 2
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@b = dso_local local_unnamed_addr global i32 0, align 4
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define void @fun(i8 noundef zeroext %g) {
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; CHECK-LABEL: fun
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entry:
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%agg.tmp.ensured.sroa.0 = alloca i8, align 2
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%conv = zext i8 %g to i64
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%0 = inttoptr i64 %conv to ptr
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%.fr = freeze ptr getelementptr inbounds ([6 x [6 x [3 x i8]]], ptr @a, i64 0, i64 1, i64 2, i64 1)
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%cmp = icmp eq ptr %.fr, %0
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%1 = load i8, ptr getelementptr inbounds ([6 x [6 x [3 x i8]]], ptr @a, i64 0, i64 5, i64 4, i64 2), align 2
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%conv2 = zext i8 %1 to i32
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br i1 %cmp, label %for.cond.us, label %for.cond
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for.cond.us: ; preds = %entry, %for.cond.us
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store i32 %conv2, ptr @b, align 4
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ret void
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for.cond: ; preds = %entry, %for.cond
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store i32 0, ptr @b, align 4
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ret void
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}
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