Rename ARMcmpNZ to ARMcmpZ and use it to represent comparisons that set only the Z flag (i.e. eq and ne). Make ARMcmpZ commutative.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74423 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 25 insertions, 0 deletions

diff --git a/test/CodeGen/Thumb2/thumb2-cmn.ll b/test/CodeGen/Thumb2/thumb2-cmn.ll
new file mode 100644
index 0000000000..1f3ef1b014
--- /dev/null
+++ b/test/CodeGen/Thumb2/thumb2-cmn.ll
@@ -0,0 +1,25 @@
+; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep {cmn\\W*r\[0-9\],\\W*r\[0-9\]} | count 4
+
+define i1 @f1(i32 %a, i32 %b) {
+    %nb = sub i32 0, %b
+    %tmp = icmp ne i32 %a, %nb
+    ret i1 %tmp
+}
+
+define i1 @f2(i32 %a, i32 %b) {
+    %nb = sub i32 0, %b
+    %tmp = icmp ne i32 %nb, %a
+    ret i1 %tmp
+}
+
+define i1 @f3(i32 %a, i32 %b) {
+    %nb = sub i32 0, %b
+    %tmp = icmp eq i32 %a, %nb
+    ret i1 %tmp
+}
+
+define i1 @f4(i32 %a, i32 %b) {
+    %nb = sub i32 0, %b
+    %tmp = icmp eq i32 %nb, %a
+    ret i1 %tmp
+}