Improve div/rem node handling on mips. Patch by Akira Hatanaka

llvm-svn: 127034

1 files changed, 51 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Mips/divrem.ll b/llvm/test/CodeGen/Mips/divrem.ll
new file mode 100644
index 00000000000..398d1b78bd4
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/divrem.ll
@@ -0,0 +1,51 @@
+; RUN: llc -march=mips < %s | FileCheck %s
+
+; CHECK: div $zero,
+define i32 @sdiv1(i32 %a0, i32 %a1) nounwind readnone {
+entry:
+  %div = sdiv i32 %a0, %a1
+  ret i32 %div
+}
+
+; CHECK: div $zero,
+define i32 @srem1(i32 %a0, i32 %a1) nounwind readnone {
+entry:
+  %rem = srem i32 %a0, %a1
+  ret i32 %rem
+}
+
+; CHECK: divu $zero,
+define i32 @udiv1(i32 %a0, i32 %a1) nounwind readnone {
+entry:
+  %div = udiv i32 %a0, %a1
+  ret i32 %div
+}
+
+; CHECK: divu $zero,
+define i32 @urem1(i32 %a0, i32 %a1) nounwind readnone {
+entry:
+  %rem = urem i32 %a0, %a1
+  ret i32 %rem
+}
+
+; CHECK: div $zero,
+define i32 @sdivrem1(i32 %a0, i32 %a1, i32* nocapture %r) nounwind {
+entry:
+  %rem = srem i32 %a0, %a1
+  store i32 %rem, i32* %r, align 4, !tbaa !0
+  %div = sdiv i32 %a0, %a1
+  ret i32 %div
+}
+
+; CHECK: divu $zero,
+define i32 @udivrem1(i32 %a0, i32 %a1, i32* nocapture %r) nounwind {
+entry:
+  %rem = urem i32 %a0, %a1
+  store i32 %rem, i32* %r, align 4, !tbaa !0
+  %div = udiv i32 %a0, %a1
+  ret i32 %div
+}
+
+!0 = metadata !{metadata !"int", metadata !1}
+!1 = metadata !{metadata !"omnipotent char", metadata !2}
+!2 = metadata !{metadata !"Simple C/C++ TBAA", null}