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c74d601f15
This is apparently worse than 1-byte alignment. This does not attempt to decompose 2-byte aligned wide stores, but will stop trying to produce them. Also fix bug in LoadStoreVectorizer which was decreasing the alignment and vectorizing stack accesses. It was assuming a stack object was an alloca that could have its base alignment changed, which is not true if the pointer is derived from a function argument.
246 lines
10 KiB
LLVM
246 lines
10 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=hawaii -mattr=-unaligned-scratch-access < %s | FileCheck -check-prefixes=GCN,GFX7-ALIGNED %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=hawaii -mattr=+unaligned-scratch-access < %s | FileCheck -check-prefixes=GCN,GFX7-UNALIGNED %s
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; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -mattr=+unaligned-scratch-access < %s | FileCheck -check-prefixes=GCN,GFX9 %s
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; Should not merge this to a dword load
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define i32 @private_load_2xi16_align2(i16 addrspace(5)* %p) #0 {
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; GFX7-ALIGNED-LABEL: private_load_2xi16_align2:
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; GFX7-ALIGNED: ; %bb.0:
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v1, vcc, 2, v0
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; GFX7-ALIGNED-NEXT: buffer_load_ushort v1, v1, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_load_ushort v0, v0, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(1)
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; GFX7-ALIGNED-NEXT: v_lshlrev_b32_e32 v1, 16, v1
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-ALIGNED-NEXT: v_or_b32_e32 v0, v0, v1
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; GFX7-ALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX7-UNALIGNED-LABEL: private_load_2xi16_align2:
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; GFX7-UNALIGNED: ; %bb.0:
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-UNALIGNED-NEXT: v_add_i32_e32 v1, vcc, 2, v0
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; GFX7-UNALIGNED-NEXT: buffer_load_ushort v1, v1, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: buffer_load_ushort v0, v0, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(1)
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; GFX7-UNALIGNED-NEXT: v_lshlrev_b32_e32 v1, 16, v1
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-UNALIGNED-NEXT: v_or_b32_e32 v0, v0, v1
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; GFX7-UNALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX9-LABEL: private_load_2xi16_align2:
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; GFX9: ; %bb.0:
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; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX9-NEXT: buffer_load_ushort v1, v0, s[0:3], s33 offen
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; GFX9-NEXT: buffer_load_ushort v0, v0, s[0:3], s33 offen offset:2
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; GFX9-NEXT: s_waitcnt vmcnt(0)
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; GFX9-NEXT: v_lshl_or_b32 v0, v0, 16, v1
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; GFX9-NEXT: s_setpc_b64 s[30:31]
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%gep.p = getelementptr i16, i16 addrspace(5)* %p, i64 1
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%p.0 = load i16, i16 addrspace(5)* %p, align 2
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%p.1 = load i16, i16 addrspace(5)* %gep.p, align 2
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%zext.0 = zext i16 %p.0 to i32
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%zext.1 = zext i16 %p.1 to i32
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%shl.1 = shl i32 %zext.1, 16
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%or = or i32 %zext.0, %shl.1
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ret i32 %or
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}
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; Should not merge this to a dword store
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define void @private_store_2xi16_align2(i16 addrspace(5)* %p, i16 addrspace(5)* %r) #0 {
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; GFX7-ALIGNED-LABEL: private_store_2xi16_align2:
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; GFX7-ALIGNED: ; %bb.0:
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-ALIGNED-NEXT: v_mov_b32_e32 v3, 1
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; GFX7-ALIGNED-NEXT: v_mov_b32_e32 v0, 2
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v2, vcc, 2, v1
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; GFX7-ALIGNED-NEXT: buffer_store_short v3, v1, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_store_short v0, v2, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-ALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX7-UNALIGNED-LABEL: private_store_2xi16_align2:
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; GFX7-UNALIGNED: ; %bb.0:
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-UNALIGNED-NEXT: v_mov_b32_e32 v3, 1
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; GFX7-UNALIGNED-NEXT: v_mov_b32_e32 v0, 2
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; GFX7-UNALIGNED-NEXT: v_add_i32_e32 v2, vcc, 2, v1
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; GFX7-UNALIGNED-NEXT: buffer_store_short v3, v1, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: buffer_store_short v0, v2, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-UNALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX9-LABEL: private_store_2xi16_align2:
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; GFX9: ; %bb.0:
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; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX9-NEXT: v_mov_b32_e32 v0, 1
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; GFX9-NEXT: buffer_store_short v0, v1, s[0:3], s33 offen
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; GFX9-NEXT: v_mov_b32_e32 v0, 2
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; GFX9-NEXT: buffer_store_short v0, v1, s[0:3], s33 offen offset:2
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; GFX9-NEXT: s_waitcnt vmcnt(0)
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; GFX9-NEXT: s_setpc_b64 s[30:31]
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%gep.r = getelementptr i16, i16 addrspace(5)* %r, i64 1
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store i16 1, i16 addrspace(5)* %r, align 2
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store i16 2, i16 addrspace(5)* %gep.r, align 2
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ret void
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}
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; Should produce align 1 dword when legal
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define i32 @private_load_2xi16_align1(i16 addrspace(5)* %p) #0 {
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; GFX7-ALIGNED-LABEL: private_load_2xi16_align1:
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; GFX7-ALIGNED: ; %bb.0:
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v1, vcc, 3, v0
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v2, vcc, 2, v0
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v3, vcc, 1, v0
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; GFX7-ALIGNED-NEXT: buffer_load_ubyte v1, v1, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_load_ubyte v3, v3, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_load_ubyte v2, v2, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_load_ubyte v0, v0, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(3)
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; GFX7-ALIGNED-NEXT: v_lshlrev_b32_e32 v1, 8, v1
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(2)
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; GFX7-ALIGNED-NEXT: v_lshlrev_b32_e32 v3, 8, v3
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(1)
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; GFX7-ALIGNED-NEXT: v_or_b32_e32 v1, v1, v2
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-ALIGNED-NEXT: v_or_b32_e32 v0, v3, v0
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; GFX7-ALIGNED-NEXT: v_lshlrev_b32_e32 v1, 16, v1
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; GFX7-ALIGNED-NEXT: v_or_b32_e32 v0, v0, v1
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; GFX7-ALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX7-UNALIGNED-LABEL: private_load_2xi16_align1:
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; GFX7-UNALIGNED: ; %bb.0:
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-UNALIGNED-NEXT: buffer_load_dword v0, v0, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-UNALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX9-LABEL: private_load_2xi16_align1:
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; GFX9: ; %bb.0:
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; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX9-NEXT: buffer_load_dword v0, v0, s[0:3], s33 offen
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; GFX9-NEXT: v_mov_b32_e32 v1, 0xffff
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; GFX9-NEXT: s_mov_b32 s4, 0xffff
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; GFX9-NEXT: s_waitcnt vmcnt(0)
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; GFX9-NEXT: v_bfi_b32 v1, v1, 0, v0
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; GFX9-NEXT: v_and_or_b32 v0, v0, s4, v1
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; GFX9-NEXT: s_setpc_b64 s[30:31]
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%gep.p = getelementptr i16, i16 addrspace(5)* %p, i64 1
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%p.0 = load i16, i16 addrspace(5)* %p, align 1
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%p.1 = load i16, i16 addrspace(5)* %gep.p, align 1
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%zext.0 = zext i16 %p.0 to i32
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%zext.1 = zext i16 %p.1 to i32
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%shl.1 = shl i32 %zext.1, 16
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%or = or i32 %zext.0, %shl.1
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ret i32 %or
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}
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; Should produce align 1 dword when legal
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define void @private_store_2xi16_align1(i16 addrspace(5)* %p, i16 addrspace(5)* %r) #0 {
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; GFX7-ALIGNED-LABEL: private_store_2xi16_align1:
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; GFX7-ALIGNED: ; %bb.0:
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-ALIGNED-NEXT: v_mov_b32_e32 v3, 1
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; GFX7-ALIGNED-NEXT: buffer_store_byte v3, v1, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v2, vcc, 2, v1
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v3, vcc, 1, v1
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; GFX7-ALIGNED-NEXT: v_mov_b32_e32 v4, 0
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; GFX7-ALIGNED-NEXT: v_add_i32_e32 v1, vcc, 3, v1
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; GFX7-ALIGNED-NEXT: v_mov_b32_e32 v0, 2
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; GFX7-ALIGNED-NEXT: buffer_store_byte v4, v3, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_store_byte v4, v1, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: buffer_store_byte v0, v2, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-ALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX7-UNALIGNED-LABEL: private_store_2xi16_align1:
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; GFX7-UNALIGNED: ; %bb.0:
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-UNALIGNED-NEXT: v_mov_b32_e32 v0, 0x20001
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; GFX7-UNALIGNED-NEXT: buffer_store_dword v0, v1, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-UNALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX9-LABEL: private_store_2xi16_align1:
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; GFX9: ; %bb.0:
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; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX9-NEXT: v_mov_b32_e32 v0, 0x20001
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; GFX9-NEXT: buffer_store_dword v0, v1, s[0:3], s33 offen
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; GFX9-NEXT: s_waitcnt vmcnt(0)
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; GFX9-NEXT: s_setpc_b64 s[30:31]
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%gep.r = getelementptr i16, i16 addrspace(5)* %r, i64 1
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store i16 1, i16 addrspace(5)* %r, align 1
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store i16 2, i16 addrspace(5)* %gep.r, align 1
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ret void
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}
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; Should merge this to a dword load
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define i32 @private_load_2xi16_align4(i16 addrspace(5)* %p) #0 {
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; GFX7-LABEL: load_2xi16_align4:
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; GFX7: ; %bb.0:
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; GFX7-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-NEXT: flat_load_dword v0, v[0:1]
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; GFX7-NEXT: s_waitcnt vmcnt(0) lgkmcnt(0)
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; GFX7-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX7-ALIGNED-LABEL: private_load_2xi16_align4:
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; GFX7-ALIGNED: ; %bb.0:
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-ALIGNED-NEXT: buffer_load_dword v0, v0, s[0:3], s33 offen
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; GFX7-ALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-ALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX7-UNALIGNED-LABEL: private_load_2xi16_align4:
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; GFX7-UNALIGNED: ; %bb.0:
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX7-UNALIGNED-NEXT: buffer_load_dword v0, v0, s[0:3], s33 offen
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; GFX7-UNALIGNED-NEXT: s_waitcnt vmcnt(0)
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; GFX7-UNALIGNED-NEXT: s_setpc_b64 s[30:31]
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;
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; GFX9-LABEL: private_load_2xi16_align4:
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; GFX9: ; %bb.0:
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; GFX9-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GFX9-NEXT: buffer_load_dword v0, v0, s[0:3], s33 offen
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; GFX9-NEXT: v_mov_b32_e32 v1, 0xffff
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; GFX9-NEXT: s_mov_b32 s4, 0xffff
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; GFX9-NEXT: s_waitcnt vmcnt(0)
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; GFX9-NEXT: v_bfi_b32 v1, v1, 0, v0
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; GFX9-NEXT: v_and_or_b32 v0, v0, s4, v1
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; GFX9-NEXT: s_setpc_b64 s[30:31]
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%gep.p = getelementptr i16, i16 addrspace(5)* %p, i64 1
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%p.0 = load i16, i16 addrspace(5)* %p, align 4
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%p.1 = load i16, i16 addrspace(5)* %gep.p, align 2
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%zext.0 = zext i16 %p.0 to i32
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%zext.1 = zext i16 %p.1 to i32
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%shl.1 = shl i32 %zext.1, 16
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%or = or i32 %zext.0, %shl.1
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ret i32 %or
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}
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; Should merge this to a dword store
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define void @private_store_2xi16_align4(i16 addrspace(5)* %p, i16 addrspace(5)* %r) #0 {
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; GFX7-LABEL: private_store_2xi16_align4:
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; GFX7: ; %bb.0:
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; GFX7-NEXT: s_load_dwordx2 s[0:1], s[4:5], 0x2
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; GFX7-NEXT: v_mov_b32_e32 v2, 0x20001
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; GFX7-NEXT: s_waitcnt lgkmcnt(0)
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; GFX7-NEXT: v_mov_b32_e32 v0, s0
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; GFX7-NEXT: v_mov_b32_e32 v1, s1
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; GFX7-NEXT: flat_store_dword v[0:1], v2
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; GFX7-NEXT: s_endpgm
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;
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; GCN-LABEL: private_store_2xi16_align4:
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; GCN: ; %bb.0:
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; GCN-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; GCN-NEXT: v_mov_b32_e32 v0, 0x20001
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; GCN-NEXT: buffer_store_dword v0, v1, s[0:3], s33 offen
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; GCN-NEXT: s_waitcnt vmcnt(0)
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; GCN-NEXT: s_setpc_b64 s[30:31]
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%gep.r = getelementptr i16, i16 addrspace(5)* %r, i64 1
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store i16 1, i16 addrspace(5)* %r, align 4
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store i16 2, i16 addrspace(5)* %gep.r, align 2
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ret void
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}
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