1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
;RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s
; Exactly one constant vector can be folded into dot4, which means exactly
; 4 MOV instructions
; CHECK: {{^}}main:
; CHECK: MOV
; CHECK: MOV
; CHECK: MOV
; CHECK: MOV
; CHECK-NOT: MOV
; CHECK-NOT: MOV
; CHECK-NOT: MOV
; CHECK-NOT: MOV
define void @main(float addrspace(1)* %out) {
main_body:
%0 = load <4 x float>, <4 x float> addrspace(8)* null
%1 = load <4 x float>, <4 x float> addrspace(8)* getelementptr ([1024 x <4 x float>], [1024 x <4 x float>] addrspace(8)* null, i64 0, i32 1)
%2 = call float @llvm.AMDGPU.dp4(<4 x float> %0,<4 x float> %1)
%3 = insertelement <4 x float> undef, float %2, i32 0
call void @llvm.R600.store.swizzle(<4 x float> %3, i32 0, i32 0)
ret void
}
declare float @llvm.AMDGPU.dp4(<4 x float>, <4 x float>) #1
declare void @llvm.R600.store.swizzle(<4 x float>, i32, i32)
attributes #1 = { readnone }
|
