[llvm] r349774 - [InstCombine] Preserve access-group metadata.

[Michael Kruse via llvm-commits]

Author: meinersbur
Date: Thu Dec 20 09:11:02 2018
New Revision: 349774

URL: http://llvm.org/viewvc/llvm-project?rev=349774&view=rev
Log:
[InstCombine] Preserve access-group metadata.

Preserve llvm.access.group metadata when combining store instructions.
This was forgotten in r349725.

Fixes llvm.org/PR40117

Modified:
    llvm/trunk/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
    llvm/trunk/test/Transforms/InstCombine/bitcast-store.ll

Modified: llvm/trunk/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp?rev=349774&r1=349773&r2=349774&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp (original)
+++ llvm/trunk/lib/Transforms/InstCombine/InstCombineLoadStoreAlloca.cpp Thu Dec 20 09:11:02 2018
@@ -553,10 +553,10 @@ static StoreInst *combineStoreToNewValue
     case LLVMContext::MD_noalias:
     case LLVMContext::MD_nontemporal:
     case LLVMContext::MD_mem_parallel_loop_access:
+    case LLVMContext::MD_access_group:
       // All of these directly apply.
       NewStore->setMetadata(ID, N);
       break;
-
     case LLVMContext::MD_invariant_load:
     case LLVMContext::MD_nonnull:
     case LLVMContext::MD_range:

Modified: llvm/trunk/test/Transforms/InstCombine/bitcast-store.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/bitcast-store.ll?rev=349774&r1=349773&r2=349774&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/bitcast-store.ll (original)
+++ llvm/trunk/test/Transforms/InstCombine/bitcast-store.ll Thu Dec 20 09:11:02 2018
@@ -10,11 +10,11 @@ target datalayout = "e-p:64:64:64-i1:8:8
 @G = external constant [5 x i8*]
 
 ; CHECK-LABEL: @foo
-; CHECK: store i32 %x, i32* %{{.*}}, align 16, !noalias !0
+; CHECK: store i32 %x, i32* %{{.*}}, align 16, !noalias !0, !llvm.access.group !1
 define void @foo(i32 %x, float* %p) nounwind {
 entry:
   %x.cast = bitcast i32 %x to float
-  store float %x.cast, float* %p, align 16, !noalias !0
+  store float %x.cast, float* %p, align 16, !noalias !0, !llvm.access.group !1
   ret void
 }
 
@@ -48,3 +48,4 @@ entry:
 }
 
 !0 = !{!0}
+!1 = !{}
\ No newline at end of file