[Wasm] Require location for buildDrop and fix all usages

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/BodyGenerator.kt

@@ -68,7 +68,7 @@ class BodyGenerator(
     private fun generateAsStatement(statement: IrExpression) {
         generateExpression(statement)
         if (statement.type != wasmSymbols.voidType) {
-            body.buildDrop()
+            body.buildDrop(statement.getSourceLocation())
         }
     }
 
@@ -489,7 +489,7 @@ class BodyGenerator(
                 location
             )
         } else {
-            body.buildDrop()
+            body.buildDrop(location)
             body.buildConstI32(1, location)
         }
     }
@@ -546,11 +546,11 @@ class BodyGenerator(
                                 body.buildInstr(WasmOp.I32_EQZ)
                                 body.buildBr(outerLabel)
                             }
-                            body.buildDrop()
+                            body.buildDrop(location)
                             body.buildConstI32(0, location)
                         }
                     } else {
-                        body.buildDrop()
+                        body.buildDrop(location)
                         body.buildConstI32(0, location)
                     }
                 }
@@ -589,7 +589,6 @@ class BodyGenerator(
                 }
 
                 wasmSymbols.unsafeGetScratchRawMemory -> {
-                    
                     body.buildConstI32Symbol(context.scratchMemAddr, location)
                 }
 
@@ -721,7 +720,7 @@ class BodyGenerator(
         // NOTHING? -> TYPE? -> (NOTHING?)NULL
         if (actualType.isNullableNothing() && expectedType.isNullable()) {
             if (expectedType.getClass()?.isExternal == true) {
-                body.buildDrop()
+                body.buildDrop(location)
                 body.buildRefNull(WasmHeapType.Simple.NullNoExtern, location)
             }
             return

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/ir2wasm/OptimisedWhenGenerator.kt

@@ -333,7 +333,7 @@ private fun BodyGenerator.genTableIntSwitch(
 
     for (expression in branches) {
         if (resultType != null) {
-            body.buildDrop()
+            body.buildDrop(location)
         }
         generateWithExpectedType(expression.expression, expectedType)
 
@@ -343,7 +343,7 @@ private fun BodyGenerator.genTableIntSwitch(
 
     if (elseExpression != null) {
         if (resultType != null) {
-            body.buildDrop()
+            body.buildDrop(location)
         }
         generateWithExpectedType(elseExpression, expectedType)
     }

wasm/wasm.ir/src/org/jetbrains/kotlin/wasm/ir/WasmExpressionBuilder.kt

@@ -179,8 +179,8 @@ abstract class WasmExpressionBuilder {
         buildInstr(WasmOp.REF_NULL, location, WasmImmediate.HeapType(WasmRefType(type)))
     }
 
-    fun buildDrop() {
-        buildInstr(WasmOp.DROP)
+    fun buildDrop(location: SourceLocation) {
+        buildInstr(WasmOp.DROP, location)
     }
 
     inline fun commentPreviousInstr(text: () -> String) {