[PPC] Add store merging testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@354595 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/PowerPC/constant-combines.ll b/test/CodeGen/PowerPC/constant-combines.ll
new file mode 100644
index 0000000..b959dc4
--- /dev/null
+++ b/test/CodeGen/PowerPC/constant-combines.ll
@@ -0,0 +1,51 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=powerpc64-unknown-linux-gnu -o - %s | FileCheck --check-prefix=BE %s
+; RUN: llc -mtriple=powerpc64le-unknown-linux-gnu -o - %s | FileCheck --check-prefix=LE %s
+
+define void @fold_constant_stores_loaddr(i8* %i8_ptr) {
+; BE-LABEL: fold_constant_stores_loaddr:
+; BE: # %bb.0: # %entry
+; BE-NEXT: li 4, 0
+; BE-NEXT: std 4, 0(3)
+; BE-NEXT: li 4, -86
+; BE-NEXT: stb 4, 0(3)
+; BE-NEXT: blr
+;
+; LE-LABEL: fold_constant_stores_loaddr:
+; LE: # %bb.0: # %entry
+; LE-NEXT: li 4, 0
+; LE-NEXT: li 5, -86
+; LE-NEXT: std 4, 0(3)
+; LE-NEXT: stb 5, 0(3)
+; LE-NEXT: blr
+entry:
+ %i64_ptr = bitcast i8* %i8_ptr to i64*
+ store i64 0, i64* %i64_ptr, align 8
+ store i8 170, i8* %i8_ptr, align 1
+ ret void
+}
+
+
+define void @fold_constant_stores_hiaddr(i8* %i8_ptr) {
+; BE-LABEL: fold_constant_stores_hiaddr:
+; BE: # %bb.0: # %entry
+; BE-NEXT: li 4, 0
+; BE-NEXT: std 4, 0(3)
+; BE-NEXT: li 4, -86
+; BE-NEXT: stb 4, 0(3)
+; BE-NEXT: blr
+;
+; LE-LABEL: fold_constant_stores_hiaddr:
+; LE: # %bb.0: # %entry
+; LE-NEXT: li 4, 0
+; LE-NEXT: li 5, -86
+; LE-NEXT: std 4, 0(3)
+; LE-NEXT: stb 5, 0(3)
+; LE-NEXT: blr
+entry:
+ %i64_ptr = bitcast i8* %i8_ptr to i64*
+ store i64 0, i64* %i64_ptr, align 8
+ %i8_ptr2 = getelementptr inbounds i8, i8* %i8_ptr, i64 7
+ store i8 170, i8* %i8_ptr, align 1
+ ret void
+}
