[Hexagon] Add support for nontemporal loads and stores on HVX

Patch by Michael Wu.

Differential Revision: https://reviews.llvm.org/D35104

llvm-svn: 307671

1 files changed, 28 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Hexagon/hvx-nontemporal.ll b/llvm/test/CodeGen/Hexagon/hvx-nontemporal.ll
new file mode 100644
index 00000000000..98c5ef4809b
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/hvx-nontemporal.ll
@@ -0,0 +1,28 @@
+; RUN: llc -march=hexagon < %s | FileCheck %s
+target triple = "hexagon"
+
+; Function Attrs: norecurse nounwind
+define void @test(<32 x i32>* nocapture readonly %x, <32 x i32>* nocapture readnone %y, <32 x i32>* nocapture %a, <32 x i32>* nocapture %b) #0 {
+entry:
+; CHECK: v0 = vmem(r0+#7):nt
+  %add.ptr = getelementptr inbounds <32 x i32>, <32 x i32>* %x, i32 7
+  %0 = load <32 x i32>, <32 x i32>* %add.ptr, align 128, !tbaa !1, !nontemporal !4
+
+; CHECK: v1.cur = vmem(r2+#0):nt
+  %1 = load <32 x i32>, <32 x i32>* %a, align 128, !tbaa !1, !nontemporal !4
+
+; CHECK: vmem(r3+#3):nt = v1
+  %add.ptr2 = getelementptr inbounds <32 x i32>, <32 x i32>* %b, i32 3
+  store <32 x i32> %1, <32 x i32>* %add.ptr2, align 128, !tbaa !1, !nontemporal !4
+
+; CHECK: vmem(r2+#0):nt = v0
+  store <32 x i32> %0, <32 x i32>* %a, align 128, !tbaa !1, !nontemporal !4
+  ret void
+}
+
+attributes #0 = { norecurse nounwind "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-double" }
+
+!1 = !{!2, !2, i64 0}
+!2 = !{!"omnipotent char", !3, i64 0}
+!3 = !{!"Simple C/C++ TBAA"}
+!4 = !{i32 1}