R600/SI: Allow commuting some 3 op instructions
e.g. v_mad_f32 a, b, c -> v_mad_f32 b, a, c
This simplifies matching v_madmk_f32.
This looks somewhat surprising, but it appears to be
OK to do this. We can commute src0 and src1 in all
of these instructions, and that's all that appears
to matter.
llvm-svn: 221910
diff --git a/llvm/test/CodeGen/R600/fma.ll b/llvm/test/CodeGen/R600/fma.ll
index d715c99..637e799 100644
--- a/llvm/test/CodeGen/R600/fma.ll
+++ b/llvm/test/CodeGen/R600/fma.ll
@@ -5,6 +5,8 @@
declare <2 x float> @llvm.fma.v2f32(<2 x float>, <2 x float>, <2 x float>) nounwind readnone
declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>) nounwind readnone
+declare i32 @llvm.r600.read.tidig.x() nounwind readnone
+
; FUNC-LABEL: {{^}}fma_f32:
; SI: v_fma_f32 {{v[0-9]+, v[0-9]+, v[0-9]+, v[0-9]+}}
@@ -12,12 +14,12 @@
; EG: FMA {{\*? *}}[[RES]]
define void @fma_f32(float addrspace(1)* %out, float addrspace(1)* %in1,
float addrspace(1)* %in2, float addrspace(1)* %in3) {
- %r0 = load float addrspace(1)* %in1
- %r1 = load float addrspace(1)* %in2
- %r2 = load float addrspace(1)* %in3
- %r3 = tail call float @llvm.fma.f32(float %r0, float %r1, float %r2)
- store float %r3, float addrspace(1)* %out
- ret void
+ %r0 = load float addrspace(1)* %in1
+ %r1 = load float addrspace(1)* %in2
+ %r2 = load float addrspace(1)* %in3
+ %r3 = tail call float @llvm.fma.f32(float %r0, float %r1, float %r2)
+ store float %r3, float addrspace(1)* %out
+ ret void
}
; FUNC-LABEL: {{^}}fma_v2f32:
@@ -29,12 +31,12 @@
; EG-DAG: FMA {{\*? *}}[[RES]].[[CHHI]]
define void @fma_v2f32(<2 x float> addrspace(1)* %out, <2 x float> addrspace(1)* %in1,
<2 x float> addrspace(1)* %in2, <2 x float> addrspace(1)* %in3) {
- %r0 = load <2 x float> addrspace(1)* %in1
- %r1 = load <2 x float> addrspace(1)* %in2
- %r2 = load <2 x float> addrspace(1)* %in3
- %r3 = tail call <2 x float> @llvm.fma.v2f32(<2 x float> %r0, <2 x float> %r1, <2 x float> %r2)
- store <2 x float> %r3, <2 x float> addrspace(1)* %out
- ret void
+ %r0 = load <2 x float> addrspace(1)* %in1
+ %r1 = load <2 x float> addrspace(1)* %in2
+ %r2 = load <2 x float> addrspace(1)* %in3
+ %r3 = tail call <2 x float> @llvm.fma.v2f32(<2 x float> %r0, <2 x float> %r1, <2 x float> %r2)
+ store <2 x float> %r3, <2 x float> addrspace(1)* %out
+ ret void
}
; FUNC-LABEL: {{^}}fma_v4f32:
@@ -50,10 +52,41 @@
; EG-DAG: FMA {{\*? *}}[[RES]].W
define void @fma_v4f32(<4 x float> addrspace(1)* %out, <4 x float> addrspace(1)* %in1,
<4 x float> addrspace(1)* %in2, <4 x float> addrspace(1)* %in3) {
- %r0 = load <4 x float> addrspace(1)* %in1
- %r1 = load <4 x float> addrspace(1)* %in2
- %r2 = load <4 x float> addrspace(1)* %in3
- %r3 = tail call <4 x float> @llvm.fma.v4f32(<4 x float> %r0, <4 x float> %r1, <4 x float> %r2)
- store <4 x float> %r3, <4 x float> addrspace(1)* %out
- ret void
+ %r0 = load <4 x float> addrspace(1)* %in1
+ %r1 = load <4 x float> addrspace(1)* %in2
+ %r2 = load <4 x float> addrspace(1)* %in3
+ %r3 = tail call <4 x float> @llvm.fma.v4f32(<4 x float> %r0, <4 x float> %r1, <4 x float> %r2)
+ store <4 x float> %r3, <4 x float> addrspace(1)* %out
+ ret void
+}
+
+; FUNC-LABEL: @fma_commute_mul_inline_imm_f32
+; SI: v_fma_f32 {{v[0-9]+}}, 2.0, {{v[0-9]+}}, {{v[0-9]+}}
+define void @fma_commute_mul_inline_imm_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in.a, float addrspace(1)* noalias %in.b) nounwind {
+ %tid = tail call i32 @llvm.r600.read.tidig.x() nounwind readnone
+ %in.a.gep = getelementptr float addrspace(1)* %in.a, i32 %tid
+ %in.b.gep = getelementptr float addrspace(1)* %in.b, i32 %tid
+ %out.gep = getelementptr float addrspace(1)* %out, i32 %tid
+
+ %a = load float addrspace(1)* %in.a.gep, align 4
+ %b = load float addrspace(1)* %in.b.gep, align 4
+
+ %fma = call float @llvm.fma.f32(float %a, float 2.0, float %b)
+ store float %fma, float addrspace(1)* %out.gep, align 4
+ ret void
+}
+
+; FUNC-LABEL: @fma_commute_mul_s_f32
+define void @fma_commute_mul_s_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in.a, float addrspace(1)* noalias %in.b, float %b) nounwind {
+ %tid = tail call i32 @llvm.r600.read.tidig.x() nounwind readnone
+ %in.a.gep = getelementptr float addrspace(1)* %in.a, i32 %tid
+ %in.b.gep = getelementptr float addrspace(1)* %in.b, i32 %tid
+ %out.gep = getelementptr float addrspace(1)* %out, i32 %tid
+
+ %a = load float addrspace(1)* %in.a.gep, align 4
+ %c = load float addrspace(1)* %in.b.gep, align 4
+
+ %fma = call float @llvm.fma.f32(float %a, float %b, float %c)
+ store float %fma, float addrspace(1)* %out.gep, align 4
+ ret void
}
