Add support for mips32 madd and msub instructions. Patch by Akira Hatanaka

llvm-svn: 123760

1 files changed, 65 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Mips/madd-msub.ll b/llvm/test/CodeGen/Mips/madd-msub.ll
new file mode 100644
index 00000000000..4a205b1f3ff
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/madd-msub.ll
@@ -0,0 +1,65 @@
+; RUN: llc -march=mips -mcpu=4ke < %s | FileCheck %s
+
+; CHECK: madd $5, $4
+define i64 @madd1(i32 %a, i32 %b, i32 %c) nounwind readnone {
+entry:
+  %conv = sext i32 %a to i64
+  %conv2 = sext i32 %b to i64
+  %mul = mul nsw i64 %conv2, %conv
+  %conv4 = sext i32 %c to i64
+  %add = add nsw i64 %mul, %conv4
+  ret i64 %add
+}
+
+; CHECK: maddu $5, $4
+define i64 @madd2(i32 %a, i32 %b, i32 %c) nounwind readnone {
+entry:
+  %conv = zext i32 %a to i64
+  %conv2 = zext i32 %b to i64
+  %mul = mul nsw i64 %conv2, %conv
+  %conv4 = zext i32 %c to i64
+  %add = add nsw i64 %mul, %conv4
+  ret i64 %add
+}
+
+; CHECK: madd $5, $4
+define i64 @madd3(i32 %a, i32 %b, i64 %c) nounwind readnone {
+entry:
+  %conv = sext i32 %a to i64
+  %conv2 = sext i32 %b to i64
+  %mul = mul nsw i64 %conv2, %conv
+  %add = add nsw i64 %mul, %c
+  ret i64 %add
+}
+
+; CHECK: msub $5, $4
+define i64 @msub1(i32 %a, i32 %b, i32 %c) nounwind readnone {
+entry:
+  %conv = sext i32 %c to i64
+  %conv2 = sext i32 %a to i64
+  %conv4 = sext i32 %b to i64
+  %mul = mul nsw i64 %conv4, %conv2
+  %sub = sub nsw i64 %conv, %mul
+  ret i64 %sub
+}
+
+; CHECK: msubu $5, $4
+define i64 @msub2(i32 %a, i32 %b, i32 %c) nounwind readnone {
+entry:
+  %conv = zext i32 %c to i64
+  %conv2 = zext i32 %a to i64
+  %conv4 = zext i32 %b to i64
+  %mul = mul nsw i64 %conv4, %conv2
+  %sub = sub nsw i64 %conv, %mul
+  ret i64 %sub
+}
+
+; CHECK: msub $5, $4
+define i64 @msub3(i32 %a, i32 %b, i64 %c) nounwind readnone {
+entry:
+  %conv = sext i32 %a to i64
+  %conv3 = sext i32 %b to i64
+  %mul = mul nsw i64 %conv3, %conv
+  %sub = sub nsw i64 %c, %mul
+  ret i64 %sub
+}