Add ROTR and ROTRV mips32 instructions. Patch by Akira Hatanaka

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121377 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 40 insertions, 0 deletions

diff --git a/test/CodeGen/Mips/rotate.ll b/test/CodeGen/Mips/rotate.ll
new file mode 100644
index 0000000..e7dc309
--- /dev/null
+++ b/test/CodeGen/Mips/rotate.ll
@@ -0,0 +1,40 @@
+; RUN: llc -march=mips -mcpu=4ke < %s | FileCheck %s
+
+; CHECK:  rotrv $2, $4, $2
+define i32 @rot0(i32 %a, i32 %b) nounwind readnone {
+entry:
+  %shl = shl i32 %a, %b
+  %sub = sub i32 32, %b
+  %shr = lshr i32 %a, %sub
+  %or = or i32 %shr, %shl
+  ret i32 %or
+}
+
+; CHECK:  rotr  $2, $4, 22
+define i32 @rot1(i32 %a) nounwind readnone {
+entry:
+  %shl = shl i32 %a, 10
+  %shr = lshr i32 %a, 22
+  %or = or i32 %shl, %shr
+  ret i32 %or
+}
+
+; CHECK:  rotrv $2, $4, $5
+define i32 @rot2(i32 %a, i32 %b) nounwind readnone {
+entry:
+  %shr = lshr i32 %a, %b
+  %sub = sub i32 32, %b
+  %shl = shl i32 %a, %sub
+  %or = or i32 %shl, %shr
+  ret i32 %or
+}
+
+; CHECK:  rotr  $2, $4, 10
+define i32 @rot3(i32 %a) nounwind readnone {
+entry:
+  %shr = lshr i32 %a, 10
+  %shl = shl i32 %a, 22
+  %or = or i32 %shr, %shl
+  ret i32 %or
+}
+