[PATCH] D33298: [SROA] Fix APInt size when load/store have different address space

[Yaxun Liu via Phabricator via llvm-commits]

yaxunl updated this revision to Diff 101944.
yaxunl retitled this revision from "[SROA] Fix adjusted pointer type and APInt size when load/store have different address space" to "[SROA] Fix APInt size when load/store have different address space".
yaxunl edited the summary of this revision.
yaxunl added a comment.

Rebased.


https://reviews.llvm.org/D33298

Files:
  lib/Transforms/Scalar/SROA.cpp
  test/Transforms/SROA/address-spaces.ll


Index: test/Transforms/SROA/address-spaces.ll
===================================================================
--- test/Transforms/SROA/address-spaces.ll
+++ test/Transforms/SROA/address-spaces.ll
@@ -100,4 +100,31 @@
    %f2 = load float, float* %b.gep2
    %ret = fadd float %f1, %f2
    ret float %ret
+
+; Test load from and store to non-zero address space.
+define void @test_load_store_diff_addr_space([2 x float] addrspace(1)* %complex1, [2 x float] addrspace(1)* %complex2) {
+; CHECK-LABEL: @test_load_store_diff_addr_space
+; CHECK-NOT: alloca
+; CHECK: load i32, i32 addrspace(1)*
+; CHECK: load i32, i32 addrspace(1)*
+; CHECK: store i32 %{{.*}}, i32 addrspace(1)*
+; CHECK: store i32 %{{.*}}, i32 addrspace(1)*
+  %a = alloca i64
+  %a.cast = bitcast i64* %a to [2 x float]*
+  %a.gep1 = getelementptr [2 x float], [2 x float]* %a.cast, i32 0, i32 0
+  %a.gep2 = getelementptr [2 x float], [2 x float]* %a.cast, i32 0, i32 1
+  %complex1.gep = getelementptr [2 x float], [2 x float] addrspace(1)* %complex1, i32 0, i32 0
+  %p1 = bitcast float addrspace(1)* %complex1.gep to i64 addrspace(1)*
+  %v1 = load i64, i64 addrspace(1)* %p1
+  store i64 %v1, i64* %a
+  %f1 = load float, float* %a.gep1
+  %f2 = load float, float* %a.gep2
+  %sum = fadd float %f1, %f2
+  store float %sum, float* %a.gep1
+  store float %sum, float* %a.gep2
+  %v2 = load i64, i64* %a
+  %complex2.gep = getelementptr [2 x float], [2 x float] addrspace(1)* %complex2, i32 0, i32 0
+  %p2 = bitcast float addrspace(1)* %complex2.gep to i64 addrspace(1)*
+  store i64 %v2, i64 addrspace(1)* %p2
+  ret void
 }
Index: lib/Transforms/Scalar/SROA.cpp
===================================================================
--- lib/Transforms/Scalar/SROA.cpp
+++ lib/Transforms/Scalar/SROA.cpp
@@ -3627,9 +3627,12 @@
             PLoad->getType()->getPointerTo(SI->getPointerAddressSpace());
 
         StoreInst *PStore = IRB.CreateAlignedStore(
-            PLoad, getAdjustedPtr(IRB, DL, StoreBasePtr,
-                                  APInt(DL.getPointerSizeInBits(), PartOffset),
-                                  PartPtrTy, StoreBasePtr->getName() + "."),
+            PLoad,
+            getAdjustedPtr(
+                IRB, DL, StoreBasePtr,
+                APInt(DL.getPointerSizeInBits(SI->getPointerAddressSpace()),
+                      PartOffset),
+                PartPtrTy, StoreBasePtr->getName() + "."),
             getAdjustedAlignment(SI, PartOffset, DL), /*IsVolatile*/ false);
         PStore->copyMetadata(*LI, LLVMContext::MD_mem_parallel_loop_access);
         DEBUG(dbgs() << "      +" << PartOffset << ":" << *PStore << "\n");
@@ -3708,19 +3711,24 @@
       } else {
         IRB.SetInsertPoint(LI);
         PLoad = IRB.CreateAlignedLoad(
-            getAdjustedPtr(IRB, DL, LoadBasePtr,
-                           APInt(DL.getPointerSizeInBits(), PartOffset),
-                           LoadPartPtrTy, LoadBasePtr->getName() + "."),
+            getAdjustedPtr(
+                IRB, DL, LoadBasePtr,
+                APInt(DL.getPointerSizeInBits(LI->getPointerAddressSpace()),
+                      PartOffset),
+                LoadPartPtrTy, LoadBasePtr->getName() + "."),
             getAdjustedAlignment(LI, PartOffset, DL), /*IsVolatile*/ false,
             LI->getName());
       }
 
       // And store this partition.
       IRB.SetInsertPoint(SI);
       StoreInst *PStore = IRB.CreateAlignedStore(
-          PLoad, getAdjustedPtr(IRB, DL, StoreBasePtr,
-                                APInt(DL.getPointerSizeInBits(), PartOffset),
-                                StorePartPtrTy, StoreBasePtr->getName() + "."),
+          PLoad,
+          getAdjustedPtr(
+              IRB, DL, StoreBasePtr,
+              APInt(DL.getPointerSizeInBits(SI->getPointerAddressSpace()),
+                    PartOffset),
+              StorePartPtrTy, StoreBasePtr->getName() + "."),
           getAdjustedAlignment(SI, PartOffset, DL), /*IsVolatile*/ false);
 
       // Now build a new slice for the alloca.


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