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Summary: DataLayout::getTypeAllocSize() return TypeSize. For cases where scalable property doesn't matter (check for zero-sized alloca), we should explicitly call getKnownMinSize() to avoid implicit type conversion to uint64_t, which is invalid for scalable vector type. Reviewers: sdesmalen, efriedma, spatel, apazos Reviewed By: efriedma Subscribers: tschuett, hiraditya, rkruppe, psnobl, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D76386
38 lines
1.2 KiB
LLVM
38 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine -verify < %s | FileCheck %s
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define <vscale x 4 x i32> @alloca(<vscale x 4 x i32> %z) {
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; CHECK-LABEL: @alloca(
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; CHECK-NEXT: ret <vscale x 4 x i32> [[Z:%.*]]
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;
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%a = alloca <vscale x 4 x i32>
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store <vscale x 4 x i32> %z, <vscale x 4 x i32>* %a
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%load = load <vscale x 4 x i32>, <vscale x 4 x i32>* %a
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ret <vscale x 4 x i32> %load
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}
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define void @alloca_dead_store(<vscale x 4 x i32> %z) {
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; CHECK-LABEL: @alloca_dead_store(
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; CHECK-NEXT: ret void
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;
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%a = alloca <vscale x 4 x i32>
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store <vscale x 4 x i32> %z, <vscale x 4 x i32>* %a
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ret void
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}
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declare void @use(...)
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define void @alloca_zero_byte_move_first_inst() {
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; CHECK-LABEL: @alloca_zero_byte_move_first_inst(
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; CHECK-NEXT: [[B:%.*]] = alloca {}, align 8
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; CHECK-NEXT: [[A:%.*]] = alloca <vscale x 16 x i8>, align 16
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; CHECK-NEXT: call void (...) @use(<vscale x 16 x i8>* nonnull [[A]])
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; CHECK-NEXT: call void (...) @use({}* nonnull [[B]])
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; CHECK-NEXT: ret void
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;
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%a = alloca <vscale x 16 x i8>
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call void (...) @use( <vscale x 16 x i8>* %a )
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%b = alloca { }
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call void (...) @use( { }* %b )
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ret void
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}
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