add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22982 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt
index dc1bc57..649986e 100644
--- a/lib/Target/PowerPC/README.txt
+++ b/lib/Target/PowerPC/README.txt
@@ -51,3 +51,23 @@
b .LBBl42__2E_expand_function_8_674 ; loopentry.24
b .LBBl42__2E_expand_function_8_42 ; NewDefault
b .LBBl42__2E_expand_function_8_42 ; NewDefault
+
+* Codegen this:
+
+ void test2(int X) {
+ if (X == 0x12345678) bar();
+ }
+
+ as:
+
+ xoris r0,r3,0x1234
+ cmpwi cr0,r0,0x5678
+ beq cr0,L6
+
+ not:
+
+ lis r2, 4660
+ ori r2, r2, 22136
+ cmpw cr0, r3, r2
+ bne .LBB_test2_2
+