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; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
declare i32 @llvm.r600.read.tidig.x() nounwind readnone
; Make sure we don't turn the 32-bit argument load into a 16-bit
; load. There aren't extending scalar lods, so that would require
; using a buffer_load instruction.
; FUNC-LABEL: {{^}}truncate_kernarg_i32_to_i16:
; SI: s_load_dword s
; SI: buffer_store_short v
define void @truncate_kernarg_i32_to_i16(i16 addrspace(1)* %out, i32 %arg) nounwind {
%trunc = trunc i32 %arg to i16
store i16 %trunc, i16 addrspace(1)* %out
ret void
}
; It should be OK (and probably performance neutral) to reduce this,
; but we don't know if the load is uniform yet.
; FUNC-LABEL: {{^}}truncate_buffer_load_i32_to_i16:
; SI: buffer_load_dword v
; SI: buffer_store_short v
define void @truncate_buffer_load_i32_to_i16(i16 addrspace(1)* %out, i32 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i32 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i16 addrspace(1)* %out, i32 %tid
%load = load i32 addrspace(1)* %gep.in
%trunc = trunc i32 %load to i16
store i16 %trunc, i16 addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}truncate_kernarg_i32_to_i8:
; SI: s_load_dword s
; SI: buffer_store_byte v
define void @truncate_kernarg_i32_to_i8(i8 addrspace(1)* %out, i32 %arg) nounwind {
%trunc = trunc i32 %arg to i8
store i8 %trunc, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}truncate_buffer_load_i32_to_i8:
; SI: buffer_load_dword v
; SI: buffer_store_byte v
define void @truncate_buffer_load_i32_to_i8(i8 addrspace(1)* %out, i32 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i32 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i8 addrspace(1)* %out, i32 %tid
%load = load i32 addrspace(1)* %gep.in
%trunc = trunc i32 %load to i8
store i8 %trunc, i8 addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}truncate_kernarg_i32_to_i1:
; SI: s_load_dword s
; SI: buffer_store_byte v
define void @truncate_kernarg_i32_to_i1(i1 addrspace(1)* %out, i32 %arg) nounwind {
%trunc = trunc i32 %arg to i1
store i1 %trunc, i1 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}truncate_buffer_load_i32_to_i1:
; SI: buffer_load_dword v
; SI: buffer_store_byte v
define void @truncate_buffer_load_i32_to_i1(i1 addrspace(1)* %out, i32 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i32 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i1 addrspace(1)* %out, i32 %tid
%load = load i32 addrspace(1)* %gep.in
%trunc = trunc i32 %load to i1
store i1 %trunc, i1 addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}truncate_kernarg_i64_to_i32:
; SI: s_load_dword s
; SI: buffer_store_dword v
define void @truncate_kernarg_i64_to_i32(i32 addrspace(1)* %out, i64 %arg) nounwind {
%trunc = trunc i64 %arg to i32
store i32 %trunc, i32 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}truncate_buffer_load_i64_to_i32:
; SI: buffer_load_dword v
; SI: buffer_store_dword v
define void @truncate_buffer_load_i64_to_i32(i32 addrspace(1)* %out, i64 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i64 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i32 addrspace(1)* %out, i32 %tid
%load = load i64 addrspace(1)* %gep.in
%trunc = trunc i64 %load to i32
store i32 %trunc, i32 addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}srl_kernarg_i64_to_i32:
; SI: s_load_dword s
; SI: buffer_store_dword v
define void @srl_kernarg_i64_to_i32(i32 addrspace(1)* %out, i64 %arg) nounwind {
%srl = lshr i64 %arg, 32
%trunc = trunc i64 %srl to i32
store i32 %trunc, i32 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}srl_buffer_load_i64_to_i32:
; SI: buffer_load_dword v
; SI: buffer_store_dword v
define void @srl_buffer_load_i64_to_i32(i32 addrspace(1)* %out, i64 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i64 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i32 addrspace(1)* %out, i32 %tid
%load = load i64 addrspace(1)* %gep.in
%srl = lshr i64 %load, 32
%trunc = trunc i64 %srl to i32
store i32 %trunc, i32 addrspace(1)* %gep.out
ret void
}
; Might as well reduce to 8-bit loads.
; FUNC-LABEL: {{^}}truncate_kernarg_i16_to_i8:
; SI: s_load_dword s
; SI: buffer_store_byte v
define void @truncate_kernarg_i16_to_i8(i8 addrspace(1)* %out, i16 %arg) nounwind {
%trunc = trunc i16 %arg to i8
store i8 %trunc, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}truncate_buffer_load_i16_to_i8:
; SI: buffer_load_ubyte v
; SI: buffer_store_byte v
define void @truncate_buffer_load_i16_to_i8(i8 addrspace(1)* %out, i16 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i16 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i8 addrspace(1)* %out, i32 %tid
%load = load i16 addrspace(1)* %gep.in
%trunc = trunc i16 %load to i8
store i8 %trunc, i8 addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}srl_kernarg_i64_to_i8:
; SI: s_load_dword s
; SI: buffer_store_byte v
define void @srl_kernarg_i64_to_i8(i8 addrspace(1)* %out, i64 %arg) nounwind {
%srl = lshr i64 %arg, 32
%trunc = trunc i64 %srl to i8
store i8 %trunc, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}srl_buffer_load_i64_to_i8:
; SI: buffer_load_dword v
; SI: buffer_store_byte v
define void @srl_buffer_load_i64_to_i8(i8 addrspace(1)* %out, i64 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i64 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i8 addrspace(1)* %out, i32 %tid
%load = load i64 addrspace(1)* %gep.in
%srl = lshr i64 %load, 32
%trunc = trunc i64 %srl to i8
store i8 %trunc, i8 addrspace(1)* %gep.out
ret void
}
; FUNC-LABEL: {{^}}truncate_kernarg_i64_to_i8:
; SI: s_load_dword s
; SI: buffer_store_byte v
define void @truncate_kernarg_i64_to_i8(i8 addrspace(1)* %out, i64 %arg) nounwind {
%trunc = trunc i64 %arg to i8
store i8 %trunc, i8 addrspace(1)* %out
ret void
}
; FUNC-LABEL: {{^}}truncate_buffer_load_i64_to_i8:
; SI: buffer_load_dword v
; SI: buffer_store_byte v
define void @truncate_buffer_load_i64_to_i8(i8 addrspace(1)* %out, i64 addrspace(1)* %in) nounwind {
%tid = call i32 @llvm.r600.read.tidig.x() nounwind readnone
%gep.in = getelementptr i64 addrspace(1)* %in, i32 %tid
%gep.out = getelementptr i8 addrspace(1)* %out, i32 %tid
%load = load i64 addrspace(1)* %gep.in
%trunc = trunc i64 %load to i8
store i8 %trunc, i8 addrspace(1)* %gep.out
ret void
}
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