Add support for moving pure S-register to NEON pipeline if desired

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162898 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 64 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/domain-conv-vmovs.ll b/test/CodeGen/ARM/domain-conv-vmovs.ll
new file mode 100644
index 0000000000..f1cd9f5840
--- /dev/null
+++ b/test/CodeGen/ARM/domain-conv-vmovs.ll
@@ -0,0 +1,64 @@
+; RUN: llc -mtriple=armv7-none-linux-gnueabi -mcpu=cortex-a9 -mattr=+neon,+neonfp -float-abi=hard < %s | FileCheck %s
+
+define <2 x float> @test_vmovs_via_vext_lane0to0(float %arg, <2 x float> %in) {
+; CHECK: test_vmovs_via_vext_lane0to0:
+  %vec = insertelement <2 x float> %in, float %arg, i32 0
+  %res = fadd <2 x float> %vec, %vec
+
+; CHECK: vext.32 d1, d1, d0, #1
+; CHECK: vext.32 d1, d1, d1, #1
+; CHECK: vadd.f32 {{d[0-9]+}}, d1, d1
+
+  ret <2 x float> %res
+}
+
+define <2 x float> @test_vmovs_via_vext_lane0to1(float %arg, <2 x float> %in) {
+; CHECK: test_vmovs_via_vext_lane0to1:
+  %vec = insertelement <2 x float> %in, float %arg, i32 1
+  %res = fadd <2 x float> %vec, %vec
+
+; CHECK: vext.32 d1, d1, d1, #1
+; CHECK: vext.32 d1, d1, d0, #1
+; CHECK: vadd.f32 {{d[0-9]+}}, d1, d1
+
+  ret <2 x float> %res
+}
+
+define <2 x float> @test_vmovs_via_vext_lane1to0(float, float %arg, <2 x float> %in) {
+; CHECK: test_vmovs_via_vext_lane1to0:
+  %vec = insertelement <2 x float> %in, float %arg, i32 0
+  %res = fadd <2 x float> %vec, %vec
+
+; CHECK: vext.32 d1, d1, d1, #1
+; CHECK: vext.32 d1, d0, d1, #1
+; CHECK: vadd.f32 {{d[0-9]+}}, d1, d1
+
+  ret <2 x float> %res
+}
+
+define <2 x float> @test_vmovs_via_vext_lane1to1(float, float %arg, <2 x float> %in) {
+; CHECK: test_vmovs_via_vext_lane1to1:
+  %vec = insertelement <2 x float> %in, float %arg, i32 1
+  %res = fadd <2 x float> %vec, %vec
+
+; CHECK: vext.32 d1, d0, d1, #1
+; CHECK: vext.32 d1, d1, d1, #1
+; CHECK: vadd.f32 {{d[0-9]+}}, d1, d1
+
+  ret <2 x float> %res
+}
+
+
+define float @test_vmovs_via_vdup(float, float %ret, float %lhs, float %rhs) {
+; CHECK: test_vmovs_via_vdup:
+
+  ; Do an operation (which will end up NEON because of +neonfp) to convince the
+  ; execution-domain pass that NEON is a good thing to use.
+  %res = fadd float %ret, %ret
+  ;  It makes sense for LLVM to do the addition in d0 here, because it's going
+  ;  to be returned. This means it will want a "vmov s0, s1":
+; CHECK: vdup.32 d0, d0[1]
+
+  ret float %res
+}
+