[llvm] r354595 - [PPC] Add store merging testcase.

[Nirav Dave via llvm-commits]

Author: niravd
Date: Thu Feb 21 08:34:48 2019
New Revision: 354595

URL: http://llvm.org/viewvc/llvm-project?rev=354595&view=rev
Log:
[PPC] Add store merging testcase.

Added:
    llvm/trunk/test/CodeGen/PowerPC/constant-combines.ll

Added: llvm/trunk/test/CodeGen/PowerPC/constant-combines.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/constant-combines.ll?rev=354595&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/constant-combines.ll (added)
+++ llvm/trunk/test/CodeGen/PowerPC/constant-combines.ll Thu Feb 21 08:34:48 2019
@@ -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
+}