23d209f350
SPARC ABI doesn't use stack realignment, so let LLVM know about it in `SparcFrameLowering`. This has the side effect of making all overaligned allocations go through `LowerDYNAMIC_STACKALLOC`, so implement the missing logic there too for overaligned allocations. This makes the SPARC backend not crash on overaligned `alloca`s and fix https://github.com/llvm/llvm-project/issues/89569.
34 lines
786 B
LLVM
34 lines
786 B
LLVM
; Check that stack alignment can be forced. Individual targets should test their
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; specific implementation details.
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; RUN: llc < %s -stackrealign | FileCheck %s
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; CHECK-LABEL: @f
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; CHECK-LABEL: @g
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; NVPTX can only select dynamic_stackalloc on sm_52+ and with ptx73+
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; XFAIL: target=nvptx{{.*}}
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define i32 @f(ptr %p) nounwind {
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entry:
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%0 = load i8, ptr %p
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%conv = sext i8 %0 to i32
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ret i32 %conv
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}
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define i64 @g(i32 %i) nounwind {
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entry:
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br label %if.then
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if.then:
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%0 = alloca i8, i32 %i
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call void @llvm.memset.p0.i32(ptr %0, i8 0, i32 %i, i1 false)
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%call = call i32 @f(ptr %0)
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%conv = sext i32 %call to i64
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ret i64 %conv
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}
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declare void @llvm.memset.p0.i32(ptr, i8, i32, i1) nounwind
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!llvm.module.flags = !{!0}
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!0 = !{i32 2, !"override-stack-alignment", i32 32}
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