Hexagon: Add V4 combine instructions and some more Def Pats for V2.

llvm-svn: 174331

1 files changed, 55 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Hexagon/combine_ir.ll b/llvm/test/CodeGen/Hexagon/combine_ir.ll
new file mode 100644
index 00000000000..921ce9928e6
--- /dev/null
+++ b/llvm/test/CodeGen/Hexagon/combine_ir.ll
@@ -0,0 +1,55 @@
+; RUN: llc -march=hexagon -mcpu=hexagonv4 < %s | FileCheck %s
+; CHECK: word
+; CHECK: combine(#0
+
+define void @word(i32* nocapture %a) nounwind {
+entry:
+  %0 = load i32* %a, align 4, !tbaa !0
+  %1 = zext i32 %0 to i64
+  %add.ptr = getelementptr inbounds i32* %a, i32 1
+  %2 = load i32* %add.ptr, align 4, !tbaa !0
+  %3 = zext i32 %2 to i64
+  %4 = shl nuw i64 %3, 32
+  %ins = or i64 %4, %1
+  tail call void @bar(i64 %ins) nounwind
+  ret void
+}
+
+declare void @bar(i64)
+
+; CHECK: halfword
+; CHECK: combine(#0
+
+define void @halfword(i16* nocapture %a) nounwind {
+entry:
+  %0 = load i16* %a, align 2, !tbaa !3
+  %1 = zext i16 %0 to i64
+  %add.ptr = getelementptr inbounds i16* %a, i32 1
+  %2 = load i16* %add.ptr, align 2, !tbaa !3
+  %3 = zext i16 %2 to i64
+  %4 = shl nuw nsw i64 %3, 16
+  %ins = or i64 %4, %1
+  tail call void @bar(i64 %ins) nounwind
+  ret void
+}
+
+; CHECK: byte
+; CHECK: combine(#0
+
+define void @byte(i8* nocapture %a) nounwind {
+entry:
+  %0 = load i8* %a, align 1, !tbaa !1
+  %1 = zext i8 %0 to i64
+  %add.ptr = getelementptr inbounds i8* %a, i32 1
+  %2 = load i8* %add.ptr, align 1, !tbaa !1
+  %3 = zext i8 %2 to i64
+  %4 = shl nuw nsw i64 %3, 8
+  %ins = or i64 %4, %1
+  tail call void @bar(i64 %ins) nounwind
+  ret void
+}
+
+!0 = metadata !{metadata !"int", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA"}
+!3 = metadata !{metadata !"short", metadata !1}