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https://github.com/RPCS3/llvm-mirror.git
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9622d72029
16-bit literals are encoded as 32-bit values. If high 16-bits of the value is 0xFFFF, the decoded instruction cannot be reassembled. For example, the following code 0xff,0x04,0x04,0x52,0xcd,0xab,0xff,0xff was decoded as v_mul_lo_u16_e32 v2, 0xffffabcd, v2 However this literal is actually a 64-bit constant 0x00000000ffffabcd which violates requirements described in the documentation - the truncation is not safe. This change corrects decoding to make reassembly possible. Reviewers: arsenm, rampitec Differential Revision: https://reviews.llvm.org/D84098
149 lines
6.8 KiB
LLVM
149 lines
6.8 KiB
LLVM
; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=VI -check-prefix=GCN %s
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: flat_load_ushort [[B:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], [[A]], [[B]]
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; VI-NEXT: buffer_store_short [[ADD]]
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define amdgpu_kernel void @v_test_add_i16(i16 addrspace(1)* %out, i16 addrspace(1)* %in0, i16 addrspace(1)* %in1) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i16, i16 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%gep.in1 = getelementptr inbounds i16, i16 addrspace(1)* %in1, i32 %tid
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%a = load volatile i16, i16 addrspace(1)* %gep.in0
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%b = load volatile i16, i16 addrspace(1)* %gep.in1
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%add = add i16 %a, %b
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store i16 %add, i16 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_constant:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], 0x7b, [[A]]
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; VI-NEXT: buffer_store_short [[ADD]]
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define amdgpu_kernel void @v_test_add_i16_constant(i16 addrspace(1)* %out, i16 addrspace(1)* %in0) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i16, i16 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%a = load volatile i16, i16 addrspace(1)* %gep.in0
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%add = add i16 %a, 123
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store i16 %add, i16 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_neg_constant:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], 0xfcb3, [[A]]
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; VI-NEXT: buffer_store_short [[ADD]]
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define amdgpu_kernel void @v_test_add_i16_neg_constant(i16 addrspace(1)* %out, i16 addrspace(1)* %in0) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i16, i16 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%a = load volatile i16, i16 addrspace(1)* %gep.in0
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%add = add i16 %a, -845
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store i16 %add, i16 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_inline_neg1:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], -1, [[A]]
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; VI-NEXT: buffer_store_short [[ADD]]
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define amdgpu_kernel void @v_test_add_i16_inline_neg1(i16 addrspace(1)* %out, i16 addrspace(1)* %in0) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i16, i16 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%a = load volatile i16, i16 addrspace(1)* %gep.in0
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%add = add i16 %a, -1
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store i16 %add, i16 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_zext_to_i32:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: flat_load_ushort [[B:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], [[A]], [[B]]
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; VI-NEXT: buffer_store_dword [[ADD]]
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define amdgpu_kernel void @v_test_add_i16_zext_to_i32(i32 addrspace(1)* %out, i16 addrspace(1)* %in0, i16 addrspace(1)* %in1) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%gep.in1 = getelementptr inbounds i16, i16 addrspace(1)* %in1, i32 %tid
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%a = load volatile i16, i16 addrspace(1)* %gep.in0
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%b = load volatile i16, i16 addrspace(1)* %gep.in1
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%add = add i16 %a, %b
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%ext = zext i16 %add to i32
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store i32 %ext, i32 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_zext_to_i64:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: flat_load_ushort [[B:v[0-9]+]]
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; VI-DAG: v_add_u16_e32 v[[ADD:[0-9]+]], [[A]], [[B]]
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; VI: buffer_store_dwordx2 v{{\[}}[[ADD]]:{{[0-9]+\]}}, off, {{s\[[0-9]+:[0-9]+\]}}, 0{{$}}
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define amdgpu_kernel void @v_test_add_i16_zext_to_i64(i64 addrspace(1)* %out, i16 addrspace(1)* %in0, i16 addrspace(1)* %in1) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i64, i64 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%gep.in1 = getelementptr inbounds i16, i16 addrspace(1)* %in1, i32 %tid
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%a = load volatile i16, i16 addrspace(1)* %gep.in0
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%b = load volatile i16, i16 addrspace(1)* %gep.in1
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%add = add i16 %a, %b
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%ext = zext i16 %add to i64
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store i64 %ext, i64 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_sext_to_i32:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: flat_load_ushort [[B:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], [[A]], [[B]]
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; VI-NEXT: v_bfe_i32 [[SEXT:v[0-9]+]], [[ADD]], 0, 16
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; VI-NEXT: buffer_store_dword [[SEXT]]
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define amdgpu_kernel void @v_test_add_i16_sext_to_i32(i32 addrspace(1)* %out, i16 addrspace(1)* %in0, i16 addrspace(1)* %in1) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i32, i32 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%gep.in1 = getelementptr inbounds i16, i16 addrspace(1)* %in1, i32 %tid
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%a = load i16, i16 addrspace(1)* %gep.in0
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%b = load i16, i16 addrspace(1)* %gep.in1
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%add = add i16 %a, %b
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%ext = sext i16 %add to i32
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store i32 %ext, i32 addrspace(1)* %out
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ret void
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}
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; FIXME: Need to handle non-uniform case for function below (load without gep).
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; GCN-LABEL: {{^}}v_test_add_i16_sext_to_i64:
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; VI: flat_load_ushort [[A:v[0-9]+]]
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; VI: flat_load_ushort [[B:v[0-9]+]]
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; VI: v_add_u16_e32 [[ADD:v[0-9]+]], [[A]], [[B]]
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; VI-NEXT: v_bfe_i32 v[[LO:[0-9]+]], [[ADD]], 0, 16
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; VI-NEXT: v_ashrrev_i32_e32 v[[HI:[0-9]+]], 31, v[[LO]]
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; VI-NEXT: buffer_store_dwordx2 v{{\[}}[[LO]]:[[HI]]{{\]}}
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define amdgpu_kernel void @v_test_add_i16_sext_to_i64(i64 addrspace(1)* %out, i16 addrspace(1)* %in0, i16 addrspace(1)* %in1) #1 {
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%tid = call i32 @llvm.amdgcn.workitem.id.x()
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%gep.out = getelementptr inbounds i64, i64 addrspace(1)* %out, i32 %tid
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%gep.in0 = getelementptr inbounds i16, i16 addrspace(1)* %in0, i32 %tid
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%gep.in1 = getelementptr inbounds i16, i16 addrspace(1)* %in1, i32 %tid
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%a = load i16, i16 addrspace(1)* %gep.in0
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%b = load i16, i16 addrspace(1)* %gep.in1
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%add = add i16 %a, %b
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%ext = sext i16 %add to i64
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store i64 %ext, i64 addrspace(1)* %out
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ret void
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}
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declare i32 @llvm.amdgcn.workitem.id.x() #0
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attributes #0 = { nounwind readnone }
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attributes #1 = { nounwind }
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