uabelho added a comment.
In D126689#3553292 <https://reviews.llvm.org/D126689#3553292>, @nikic wrote:
> @uabelho Here's a slightly cleaned up test case that does not use opaque
> pointers:
>
> target triple = "x86_64-unknown-linux-gnu"
>
> define void @test(i1 %cond, <1 x i16>* %p) {
> br label %loop
>
> loop:
> %v = load <1 x i16>, <1 x i16>* %p, align 2
> %ins = insertelement <4 x double> zeroinitializer, double 0.000000e+00,
> i32 0
> %cmp = fcmp uge <4 x double> %ins, zeroinitializer
> %ashr = ashr <1 x i16> %v, %v
> %shuf = shufflevector <4 x i1> %cmp, <4 x i1> zeroinitializer, <4 x i32>
> zeroinitializer
> br i1 %cond, label %loop, label %exit
>
> exit:
> %use1 = add <4 x i1> %shuf, zeroinitializer
> %use2 = add <1 x i16> %ashr, zeroinitializer
> ret void
> }
>
> llvm-stress can probably generate certain code patterns when opaque pointers
> are enabled, which it does not produce when typed pointers are used. In this
> case at least, the used pointer type doesn't matter in the end.
Yes llvm-stress must generate something unusual with opaque pointers because
normally I very rarely see that it finds something, and after the switch done
here I get several different crashes. The one I posted above was just one
example.
Next crash here: https://github.com/llvm/llvm-project/issues/55846
Repository:
rG LLVM Github Monorepo
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