diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyLowerEmscriptenEHSjLj.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyLowerEmscriptenEHSjLj.cpp
--- a/llvm/lib/Target/WebAssembly/WebAssemblyLowerEmscriptenEHSjLj.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyLowerEmscriptenEHSjLj.cpp
@@ -1290,9 +1290,11 @@
                              "setjmpTableSize", Entry->getTerminator());
   SetjmpTableSize->setDebugLoc(FirstDL);
   // setjmpTable = (int *) malloc(40);
-  Instruction *SetjmpTable = CallInst::CreateMalloc(
-      SetjmpTableSize, IRB.getInt32Ty(), IRB.getInt32Ty(), IRB.getInt32(40),
-      nullptr, nullptr, "setjmpTable");
+  Type *IntPtrTy = getAddrIntType(&M);
+  Constant *size = ConstantInt::get(IntPtrTy, 40);
+  Instruction *SetjmpTable =
+      CallInst::CreateMalloc(SetjmpTableSize, IntPtrTy, IRB.getInt32Ty(), size,
+                             nullptr, nullptr, "setjmpTable");
   SetjmpTable->setDebugLoc(FirstDL);
   // CallInst::CreateMalloc may return a bitcast instruction if the result types
   // mismatch. We need to set the debug loc for the original call too.
diff --git a/llvm/test/CodeGen/WebAssembly/lower-em-sjlj.ll b/llvm/test/CodeGen/WebAssembly/lower-em-sjlj.ll
--- a/llvm/test/CodeGen/WebAssembly/lower-em-sjlj.ll
+++ b/llvm/test/CodeGen/WebAssembly/lower-em-sjlj.ll
@@ -24,7 +24,7 @@
   call void @longjmp(%struct.__jmp_buf_tag* %arraydecay1, i32 1) #1
   unreachable
 ; CHECK: entry:
-; CHECK-NEXT: %[[MALLOCCALL:.*]] = tail call i8* @malloc(i32 40)
+; CHECK-NEXT: %[[MALLOCCALL:.*]] = tail call i8* @malloc([[PTR]] 40)
 ; CHECK-NEXT: %[[SETJMP_TABLE:.*]] = bitcast i8* %[[MALLOCCALL]] to i32*
 ; CHECK-NEXT: store i32 0, i32* %[[SETJMP_TABLE]]
 ; CHECK-NEXT: %[[SETJMP_TABLE_SIZE:.*]] = add i32 4, 0
@@ -311,7 +311,6 @@
 declare i32 @__gxx_personality_v0(...)
 declare i8* @__cxa_begin_catch(i8*)
 declare void @__cxa_end_catch()
-declare i8* @malloc(i32)
 declare void @free(i8*)
 
 ; JS glue functions and invoke wrappers declaration
diff --git a/llvm/test/CodeGen/WebAssembly/lower-wasm-sjlj.ll b/llvm/test/CodeGen/WebAssembly/lower-wasm-sjlj.ll
--- a/llvm/test/CodeGen/WebAssembly/lower-wasm-sjlj.ll
+++ b/llvm/test/CodeGen/WebAssembly/lower-wasm-sjlj.ll
@@ -27,7 +27,7 @@
   unreachable
 
 ; CHECK:    entry:
-; CHECK-NEXT: %malloccall = tail call i8* @malloc(i32 40)
+; CHECK-NEXT: %malloccall = tail call i8* @malloc([[PTR]] 40)
 ; CHECK-NEXT: %setjmpTable = bitcast i8* %malloccall to i32*
 ; CHECK-NEXT: store i32 0, i32* %setjmpTable, align 4
 ; CHECK-NEXT: %setjmpTableSize = add i32 4, 0
@@ -152,7 +152,6 @@
 declare i32 @__gxx_personality_v0(...)
 declare i8* @__cxa_begin_catch(i8*)
 declare void @__cxa_end_catch()
-declare i8* @malloc(i32)
 declare void @free(i8*)
 
 ; JS glue function declarations