SimplifyLibCalls: Use default globals address space when building new global strings. (#118729)

Writing a test for this transitively exposed a number of places in
BuildLibCalls where
we were failing to propagate address spaces properly, which are
additionally fixed.

Author: resistor

llvm/include/llvm/Transforms/Utils/BuildLibCalls.h

@@ -246,32 +246,32 @@ namespace llvm {
                     const DataLayout &DL, const TargetLibraryInfo *TLI);
 
   /// Emit a call to the malloc function.
-  Value *emitMalloc(Value *Num, IRBuilderBase &B, const DataLayout &DL,
-                    const TargetLibraryInfo *TLI);
+  Value *emitMalloc(Type *RetTy, Value *Num, IRBuilderBase &B,
+                    const DataLayout &DL, const TargetLibraryInfo *TLI);
 
   /// Emit a call to the calloc function.
-  Value *emitCalloc(Value *Num, Value *Size, IRBuilderBase &B,
-                    const TargetLibraryInfo &TLI, unsigned AddrSpace);
+  Value *emitCalloc(Type *RetTy, Value *Num, Value *Size, IRBuilderBase &B,
+                    const TargetLibraryInfo &TLI);
 
   /// Emit a call to the hot/cold operator new function.
-  Value *emitHotColdNew(Value *Num, IRBuilderBase &B,
+  Value *emitHotColdNew(Type *RetTy, Value *Num, IRBuilderBase &B,
                         const TargetLibraryInfo *TLI, LibFunc NewFunc,
                         uint8_t HotCold);
-  Value *emitHotColdNewNoThrow(Value *Num, Value *NoThrow, IRBuilderBase &B,
-                               const TargetLibraryInfo *TLI, LibFunc NewFunc,
-                               uint8_t HotCold);
-  Value *emitHotColdNewAligned(Value *Num, Value *Align, IRBuilderBase &B,
-                               const TargetLibraryInfo *TLI, LibFunc NewFunc,
-                               uint8_t HotCold);
-  Value *emitHotColdNewAlignedNoThrow(Value *Num, Value *Align, Value *NoThrow,
-                                      IRBuilderBase &B,
+  Value *emitHotColdNewNoThrow(Type *RetTy, Value *Num, Value *NoThrow,
+                               IRBuilderBase &B, const TargetLibraryInfo *TLI,
+                               LibFunc NewFunc, uint8_t HotCold);
+  Value *emitHotColdNewAligned(Type *RetTy, Value *Num, Value *Align,
+                               IRBuilderBase &B, const TargetLibraryInfo *TLI,
+                               LibFunc NewFunc, uint8_t HotCold);
+  Value *emitHotColdNewAlignedNoThrow(Type *RetTy, Value *Num, Value *Align,
+                                      Value *NoThrow, IRBuilderBase &B,
                                       const TargetLibraryInfo *TLI,
                                       LibFunc NewFunc, uint8_t HotCold);
-  Value *emitHotColdSizeReturningNew(Value *Num, IRBuilderBase &B,
+  Value *emitHotColdSizeReturningNew(Type *RetTy, Value *Num, IRBuilderBase &B,
                                      const TargetLibraryInfo *TLI,
                                      LibFunc NewFunc, uint8_t HotCold);
-  Value *emitHotColdSizeReturningNewAligned(Value *Num, Value *Align,
-                                            IRBuilderBase &B,
+  Value *emitHotColdSizeReturningNewAligned(Type *RetTy, Value *Num,
+                                            Value *Align, IRBuilderBase &B,
                                             const TargetLibraryInfo *TLI,
                                             LibFunc NewFunc, uint8_t HotCold);
 }

llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp

@@ -2014,9 +2014,8 @@ struct DSEState {
       return false;
     IRBuilder<> IRB(Malloc);
     Type *SizeTTy = Malloc->getArgOperand(0)->getType();
-    auto *Calloc =
-        emitCalloc(ConstantInt::get(SizeTTy, 1), Malloc->getArgOperand(0), IRB,
-                   TLI, Malloc->getType()->getPointerAddressSpace());
+    auto *Calloc = emitCalloc(Malloc->getType(), ConstantInt::get(SizeTTy, 1),
+                              Malloc->getArgOperand(0), IRB, TLI);
     if (!Calloc)
       return false;