Transform -X/C to X/-C, implementing a README.txt entry.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78812 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 0 deletions

diff --git a/test/Transforms/InstCombine/nsw.ll b/test/Transforms/InstCombine/nsw.ll
new file mode 100644
index 0000000000..3218371336
--- /dev/null
+++ b/test/Transforms/InstCombine/nsw.ll
@@ -0,0 +1,20 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | FileCheck %s
+
+; CHECK: define i32 @foo
+; %y = sub i32 0, %x
+; %z = sdiv i32 %y, 337
+; ret i32 %y
+define i32 @foo(i32 %x) {
+  %y = sub i32 0, %x
+  %z = sdiv i32 %y, 337
+  ret i32 %y
+}
+
+; CHECK: define i32 @bar
+; %y = sdiv i32 %x, -337
+; ret i32 %y
+define i32 @bar(i32 %x) {
+  %y = sub nsw i32 0, %x
+  %z = sdiv i32 %y, 337
+  ret i32 %y
+}