32f9983c06
This is an experimental address space for strided buffers. These buffers can have structs as elements and a stride > 1. These pointers allow the indexed access in units of stride, i.e., they point at `buffer[index * stride]`. Thus, we can use the `idxen` modifier for buffer loads. We assign address space 9 to 192-bit buffer pointers which contain a 128-bit descriptor, a 32-bit offset and a 32-bit index. Essentially, they are fat buffer pointers with an additional 32-bit index.
32 lines
1.1 KiB
LLVM
32 lines
1.1 KiB
LLVM
; RUN: opt -S -mtriple=amdgcn-- -passes=load-store-vectorizer < %s | FileCheck -check-prefix=OPT %s
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; OPT-LABEL: @buffer_fat_ptrs(
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define void @buffer_fat_ptrs(ptr addrspace(7) %out) {
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entry:
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%a1 = getelementptr i32, ptr addrspace(7) %out, i32 1
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%a2 = getelementptr i32, ptr addrspace(7) %out, i32 2
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%a3 = getelementptr i32, ptr addrspace(7) %out, i32 3
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; OPT: store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, ptr addrspace(7) %out, align 4
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store i32 0, ptr addrspace(7) %out
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store i32 1, ptr addrspace(7) %a1
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store i32 2, ptr addrspace(7) %a2
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store i32 3, ptr addrspace(7) %a3
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ret void
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}
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; OPT-LABEL: @buffer_strided_ptrs(
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define void @buffer_strided_ptrs(ptr addrspace(9) %out) {
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entry:
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%a1 = getelementptr i32, ptr addrspace(9) %out, i32 1
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%a2 = getelementptr i32, ptr addrspace(9) %out, i32 2
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%a3 = getelementptr i32, ptr addrspace(9) %out, i32 3
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; OPT: store <4 x i32> <i32 0, i32 1, i32 2, i32 3>, ptr addrspace(9) %out, align 4
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store i32 0, ptr addrspace(9) %out
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store i32 1, ptr addrspace(9) %a1
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store i32 2, ptr addrspace(9) %a2
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store i32 3, ptr addrspace(9) %a3
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ret void
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}
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