Factor out assignment lowering to allow generating multiple instructions

compiler/forget/src/HIR/BuildHIR.ts

@@ -623,7 +623,7 @@ function lowerStatement(
       const kind =
         nodeKind === "let" ? InstructionKind.Let : InstructionKind.Const;
       for (const declaration of stmt.get("declarations")) {
-        const id = lowerLVal(builder, declaration.get("id"));
+        const id = declaration.get("id");
         const init = declaration.get("init");
         let value: InstructionValue;
         if (init.hasNode()) {
@@ -632,15 +632,16 @@ function lowerStatement(
           value = {
             kind: "Primitive",
             value: undefined,
-            loc: id.loc,
+            loc: id.node.loc ?? GeneratedSource,
           };
         }
-        builder.push({
-          id: makeInstructionId(0),
-          lvalue: { place: id, kind },
-          value,
-          loc: declaration.node.loc ?? GeneratedSource,
-        });
+        lowerAssignment(
+          builder,
+          stmt.node.loc ?? GeneratedSource,
+          kind,
+          id,
+          value
+        );
       }
       return;
     }
@@ -1343,3 +1344,19 @@ function lowerLVal(builder: HIRBuilder, exprPath: NodePath<t.LVal>): Place {
     }
   }
 }
+
+function lowerAssignment(
+  builder: HIRBuilder,
+  loc: SourceLocation,
+  kind: InstructionKind,
+  lvalue: NodePath<t.LVal>,
+  value: InstructionValue
+): void {
+  const id = lowerLVal(builder, lvalue);
+  builder.push({
+    id: makeInstructionId(0),
+    lvalue: { place: id, kind },
+    value,
+    loc,
+  });
+}

compiler/forget/src/__tests__/fixtures/hir/component.expect.md

@@ -38,9 +38,9 @@ bb0:
   [1] Const mutate items$30:TProp = read props$29.items
   [2] Const mutate maxItems$31:TProp = read props$29.maxItems
   [3] Const mutate renderedItems$32_@0:TPrimitive[3:33] = Array []
-  [4] Const mutate seen$33_@0[3:33] = New mutate Set$6()
+  [4] Const mutate seen$33_@0[3:33] = New mutate Set$5()
   [5] Const mutate $34:TPrimitive = 0
-  [6] Const mutate max$35_@2:TPrimitive = Call mutate Math$8.max(read $34:TPrimitive, read maxItems$31:TProp)
+  [6] Const mutate max$35_@2:TPrimitive = Call mutate Math$7.max(read $34:TPrimitive, read maxItems$31:TProp)
   [7] For init=bb3 test=bb1 loop=bb5 update=bb4 fallthrough=bb2
 bb3:
   predecessor blocks: bb0
@@ -114,10 +114,10 @@ function Component(
   [2] Const mutate maxItems$31:TProp = read props$29.maxItems
   scope @0 [3:33] deps=[read maxItems$31:TProp, read items$30.length, read items$30] out=[renderedItems$32_@0] {
     [3] Const mutate renderedItems$32_@0:TPrimitive[3:33] = Array []
-    [4] Const mutate seen$33_@0[3:33] = New mutate Set$6()
+    [4] Const mutate seen$33_@0[3:33] = New mutate Set$5()
     [5] Const mutate $34:TPrimitive = 0
     scope @2 [6:7] deps=[read maxItems$31:TProp] out=[max$35_@2] {
-      [6] Const mutate max$35_@2:TPrimitive = Call mutate Math$8.max(read $34:TPrimitive, read maxItems$31:TProp)
+      [6] Const mutate max$35_@2:TPrimitive = Call mutate Math$7.max(read $34:TPrimitive, read maxItems$31:TProp)
     }
     for (
       [8] Let mutate i$36_@0:TPrimitive[3:33] = 0
@@ -184,12 +184,12 @@ function Component$0(props$29) {
   let renderedItems$32;
   if (c_0 || c_1 || c_2) {
     renderedItems$32 = [];
-    const seen$33 = new Set$6();
+    const seen$33 = new Set$5();
     const c_4 = $[4] !== maxItems$31;
     let max$35;
 
     if (c_4) {
-      max$35 = Math$8.max(0, maxItems$31);
+      max$35 = Math$7.max(0, maxItems$31);
       $[4] = maxItems$31;
       $[5] = max$35;
     } else {

compiler/forget/src/__tests__/fixtures/hir/hook-call.expect.md

@@ -70,7 +70,7 @@ function foo$0() {}
 ```
 bb0:
   [1] Const mutate x$11_@0 = Array []
-  [2] Const mutate y$12_@1 = Call read useFreeze$4:TFunction(freeze x$11_@0)
+  [2] Const mutate y$12_@1 = Call read useFreeze$3:TFunction(freeze x$11_@0)
   [3] Call mutate foo$5:TFunction(read y$12_@1, read x$11_@0)
   [4] Const mutate $13 = "\n      "
   [5] Const mutate $14 = "\n      "
@@ -89,7 +89,7 @@ function Component(
     [1] Const mutate x$11_@0 = Array []
   }
   scope @1 [2:3] deps=[freeze x$11_@0] out=[y$12_@1] {
-    [2] Const mutate y$12_@1 = Call read useFreeze$4:TFunction(freeze x$11_@0)
+    [2] Const mutate y$12_@1 = Call read useFreeze$3:TFunction(freeze x$11_@0)
   }
   [3] Call mutate foo$5:TFunction(read y$12_@1, read x$11_@0)
   [4] Const mutate $13 = "\n      "
@@ -120,7 +120,7 @@ function Component$0(props$10) {
   let y$12;
 
   if (c_1) {
-    y$12 = useFreeze$4(x$11);
+    y$12 = useFreeze$3(x$11);
     $[1] = x$11;
     $[2] = y$12;
   } else {

compiler/forget/src/__tests__/fixtures/hir/independent-across-if.expect.md

@@ -129,8 +129,8 @@ function Foo$0() {}
 
 ```
 bb0:
-  [1] Const mutate a$9_@1[1:7] = Call mutate compute$3:TFunction(read props$8.a)
-  [2] Const mutate b$10_@1[1:7] = Call mutate compute$3:TFunction(read props$8.b)
+  [1] Const mutate a$9_@1[1:7] = Call mutate compute$2:TFunction(read props$8.a)
+  [2] Const mutate b$10_@1[1:7] = Call mutate compute$2:TFunction(read props$8.b)
   [3] If (read props$8.c) then:bb2 else:bb1 fallthrough=bb1
 bb2:
   predecessor blocks: bb0
@@ -150,8 +150,8 @@ function Component(
   props,
 ) {
   scope @1 [1:7] deps=[read props$8.a, read props$8.b, read props$8.c] out=[a$9_@1] {
-    [1] Const mutate a$9_@1[1:7] = Call mutate compute$3:TFunction(read props$8.a)
-    [2] Const mutate b$10_@1[1:7] = Call mutate compute$3:TFunction(read props$8.b)
+    [1] Const mutate a$9_@1[1:7] = Call mutate compute$2:TFunction(read props$8.a)
+    [2] Const mutate b$10_@1[1:7] = Call mutate compute$2:TFunction(read props$8.b)
     if (read props$8.c) {
       [4] Call mutate mutate$5:TFunction(mutate a$9_@1)
       [5] Call mutate mutate$5:TFunction(mutate b$10_@1)
@@ -175,8 +175,8 @@ function Component$0(props$8) {
   const c_2 = $[2] !== props$8.c;
   let a$9;
   if (c_0 || c_1 || c_2) {
-    a$9 = compute$3(props$8.a);
-    const b$10 = compute$3(props$8.b);
+    a$9 = compute$2(props$8.a);
+    const b$10 = compute$2(props$8.b);
 
     if (props$8.c) {
       mutate$5(a$9);

compiler/forget/src/__tests__/fixtures/hir/independent.expect.md

@@ -28,8 +28,8 @@ function Foo() {}
 
 ```
 bb0:
-  [1] Const mutate a$8_@0 = Call mutate compute$3:TFunction(read props$7.a)
-  [2] Const mutate b$9_@1 = Call mutate compute$3:TFunction(read props$7.b)
+  [1] Const mutate a$8_@0 = Call mutate compute$2:TFunction(read props$7.a)
+  [2] Const mutate b$9_@1 = Call mutate compute$2:TFunction(read props$7.b)
   [3] Const mutate t6$10_@2 = JSX <read Foo$5 a={freeze a$8_@0} b={freeze b$9_@1} ></read Foo$5>
   [4] Return read t6$10_@2
 ```
@@ -41,10 +41,10 @@ function Component(
   props,
 ) {
   scope @0 [1:2] deps=[read props$7.a] out=[a$8_@0] {
-    [1] Const mutate a$8_@0 = Call mutate compute$3:TFunction(read props$7.a)
+    [1] Const mutate a$8_@0 = Call mutate compute$2:TFunction(read props$7.a)
   }
   scope @1 [2:3] deps=[read props$7.b] out=[b$9_@1] {
-    [2] Const mutate b$9_@1 = Call mutate compute$3:TFunction(read props$7.b)
+    [2] Const mutate b$9_@1 = Call mutate compute$2:TFunction(read props$7.b)
   }
   scope @2 [3:4] deps=[freeze a$8_@0, freeze b$9_@1] out=[$10_@2] {
     [3] Const mutate $10_@2 = JSX <read Foo$5 a={freeze a$8_@0} b={freeze b$9_@1} ></read Foo$5>
@@ -62,7 +62,7 @@ function Component$0(props$7) {
   const c_0 = $[0] !== props$7.a;
   let a$8;
   if (c_0) {
-    a$8 = compute$3(props$7.a);
+    a$8 = compute$2(props$7.a);
     $[0] = props$7.a;
     $[1] = a$8;
   } else {
@@ -73,7 +73,7 @@ function Component$0(props$7) {
   let b$9;
 
   if (c_2) {
-    b$9 = compute$3(props$7.b);
+    b$9 = compute$2(props$7.b);
     $[2] = props$7.b;
     $[3] = b$9;
   } else {

compiler/forget/src/__tests__/fixtures/hir/interdependent-across-if.expect.md

@@ -100,8 +100,8 @@ function Foo$0() {}
 
 ```
 bb0:
-  [1] Const mutate a$9_@0[1:6] = Call mutate compute$3:TFunction(read props$8.a)
-  [2] Const mutate b$10_@0[1:6] = Call mutate compute$3:TFunction(read props$8.b)
+  [1] Const mutate a$9_@0[1:6] = Call mutate compute$2:TFunction(read props$8.a)
+  [2] Const mutate b$10_@0[1:6] = Call mutate compute$2:TFunction(read props$8.b)
   [3] If (read props$8.c) then:bb2 else:bb1 fallthrough=bb1
 bb2:
   predecessor blocks: bb0
@@ -120,8 +120,8 @@ function Component(
   props,
 ) {
   scope @0 [1:6] deps=[read props$8.a, read props$8.b, read props$8.c] out=[a$9_@0, b$10_@0] {
-    [1] Const mutate a$9_@0[1:6] = Call mutate compute$3:TFunction(read props$8.a)
-    [2] Const mutate b$10_@0[1:6] = Call mutate compute$3:TFunction(read props$8.b)
+    [1] Const mutate a$9_@0[1:6] = Call mutate compute$2:TFunction(read props$8.a)
+    [2] Const mutate b$10_@0[1:6] = Call mutate compute$2:TFunction(read props$8.b)
     if (read props$8.c) {
       [4] Call mutate foo$5:TFunction(mutate a$9_@0, mutate b$10_@0)
     }
@@ -145,8 +145,8 @@ function Component$0(props$8) {
   let a$9;
   let b$10;
   if (c_0 || c_1 || c_2) {
-    a$9 = compute$3(props$8.a);
-    b$10 = compute$3(props$8.b);
+    a$9 = compute$2(props$8.a);
+    b$10 = compute$2(props$8.b);
 
     if (props$8.c) {
       foo$5(a$9, b$10);

compiler/forget/src/__tests__/fixtures/hir/interdependent.expect.md

@@ -28,8 +28,8 @@ function Foo() {}
 
 ```
 bb0:
-  [1] Const mutate a$9_@0[1:4] = Call mutate compute$3:TFunction(read props$8.a)
-  [2] Const mutate b$10_@0[1:4] = Call mutate compute$3:TFunction(read props$8.b)
+  [1] Const mutate a$9_@0[1:4] = Call mutate compute$2:TFunction(read props$8.a)
+  [2] Const mutate b$10_@0[1:4] = Call mutate compute$2:TFunction(read props$8.b)
   [3] Call mutate foo$5:TFunction(mutate a$9_@0, mutate b$10_@0)
   [4] Const mutate t6$11_@1 = JSX <read Foo$6 a={freeze a$9_@0} b={freeze b$10_@0} ></read Foo$6>
   [5] Return read t6$11_@1
@@ -42,8 +42,8 @@ function Component(
   props,
 ) {
   scope @0 [1:4] deps=[read props$8.a, read props$8.b] out=[a$9_@0, b$10_@0] {
-    [1] Const mutate a$9_@0[1:4] = Call mutate compute$3:TFunction(read props$8.a)
-    [2] Const mutate b$10_@0[1:4] = Call mutate compute$3:TFunction(read props$8.b)
+    [1] Const mutate a$9_@0[1:4] = Call mutate compute$2:TFunction(read props$8.a)
+    [2] Const mutate b$10_@0[1:4] = Call mutate compute$2:TFunction(read props$8.b)
     [3] Call mutate foo$5:TFunction(mutate a$9_@0, mutate b$10_@0)
   }
   scope @1 [4:5] deps=[freeze a$9_@0, freeze b$10_@0] out=[$11_@1] {
@@ -64,8 +64,8 @@ function Component$0(props$8) {
   let a$9;
   let b$10;
   if (c_0 || c_1) {
-    a$9 = compute$3(props$8.a);
-    b$10 = compute$3(props$8.b);
+    a$9 = compute$2(props$8.a);
+    b$10 = compute$2(props$8.b);
     foo$5(a$9, b$10);
     $[0] = props$8.a;
     $[1] = props$8.b;

compiler/forget/src/__tests__/fixtures/hir/mutable-lifetime-with-aliasing.expect.md

@@ -70,7 +70,7 @@ bb0:
   [4] Const mutate d$14_@1:TObject[2:15] = Object { c: read c$13_@2:TObject }
   [5] Const mutate x$15_@1:TObject[2:15] = Object {  }
   [6] Reassign store x$15_@1.b[2:15] = read b$12_@1
-  [7] Const mutate y$16_@1[2:15] = Call mutate mutate$8:TFunction(mutate x$15_@1:TObject, mutate d$14_@1:TObject)
+  [7] Const mutate y$16_@1[2:15] = Call mutate mutate$7:TFunction(mutate x$15_@1:TObject, mutate d$14_@1:TObject)
   [8] If (read a$11_@0:TObject) then:bb1 else:bb1 fallthrough=bb1
 bb1:
   predecessor blocks: bb0
@@ -87,7 +87,7 @@ bb7:
 bb9:
   predecessor blocks: bb7
   [13] Const mutate $17:TPrimitive = null
-  [14] Call mutate mutate$8:TFunction(mutate x$15_@1:TObject, read $17:TPrimitive)
+  [14] Call mutate mutate$7:TFunction(mutate x$15_@1:TObject, read $17:TPrimitive)
   [15] Return
 ```
 
@@ -107,7 +107,7 @@ function Component(
   [4] Const mutate d$14_@1:TObject[2:15] = Object { c: read c$13_@2:TObject }
   [5] Const mutate x$15_@1:TObject[2:15] = Object {  }
   [6] Reassign store x$15_@1.b[2:15] = read b$12_@1
-  [7] Const mutate y$16_@1[2:15] = Call mutate mutate$8:TFunction(mutate x$15_@1:TObject, mutate d$14_@1:TObject)
+  [7] Const mutate y$16_@1[2:15] = Call mutate mutate$7:TFunction(mutate x$15_@1:TObject, mutate d$14_@1:TObject)
   if (read a$11_@0:TObject) {
   }
   if (read b$12_@1) {
@@ -119,7 +119,7 @@ function Component(
   if (read y$16_@1) {
   }
   [13] Const mutate $17:TPrimitive = null
-  [14] Call mutate mutate$8:TFunction(mutate x$15_@1:TObject, read $17:TPrimitive)
+  [14] Call mutate mutate$7:TFunction(mutate x$15_@1:TObject, read $17:TPrimitive)
   return
 }
 
@@ -153,7 +153,7 @@ function Component$0(props$10) {
   };
   const x$15 = {};
   x$15.b = b$12;
-  const y$16 = mutate$8(x$15, d$14);
+  const y$16 = mutate$7(x$15, d$14);
 
   if (a$11) {
   }
@@ -170,7 +170,7 @@ function Component$0(props$10) {
   if (y$16) {
   }
 
-  mutate$8(x$15, null);
+  mutate$7(x$15, null);
 }
 
 ```

compiler/forget/src/__tests__/fixtures/hir/ssa-newexpression.expect.md

@@ -42,7 +42,7 @@ function Foo$0() {}
 bb0:
   [1] Const mutate a$7_@0[1:4] = Array []
   [2] Const mutate b$8_@0:TObject[1:4] = Object {  }
-  [3] Const mutate c$9_@0[1:4] = New mutate Foo$5(mutate a$7_@0, mutate b$8_@0:TObject)
+  [3] Const mutate c$9_@0[1:4] = New mutate Foo$4(mutate a$7_@0, mutate b$8_@0:TObject)
   [4] Return freeze c$9_@0
 ```
 
@@ -55,7 +55,7 @@ function Component(
   scope @0 [1:4] deps=[] out=[c$9_@0] {
     [1] Const mutate a$7_@0[1:4] = Array []
     [2] Const mutate b$8_@0:TObject[1:4] = Object {  }
-    [3] Const mutate c$9_@0[1:4] = New mutate Foo$5(mutate a$7_@0, mutate b$8_@0:TObject)
+    [3] Const mutate c$9_@0[1:4] = New mutate Foo$4(mutate a$7_@0, mutate b$8_@0:TObject)
   }
   return freeze c$9_@0
 }
@@ -71,7 +71,7 @@ function Component$0(props$6) {
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
     const a$7 = [];
     const b$8 = {};
-    c$9 = new Foo$5(a$7, b$8);
+    c$9 = new Foo$4(a$7, b$8);
     $[0] = c$9;
   } else {
     c$9 = $[0];

compiler/forget/src/__tests__/fixtures/hir/type-binary-operator.expect.md

@@ -16,8 +16,8 @@ function component() {
 
 ```
 bb0:
-  [1] Const mutate a$7_@0:TPrimitive = Call mutate some$2:TFunction()
-  [2] Const mutate b$8_@1:TPrimitive = Call mutate someOther$4:TFunction()
+  [1] Const mutate a$7_@0:TPrimitive = Call mutate some$1:TFunction()
+  [2] Const mutate b$8_@1:TPrimitive = Call mutate someOther$3:TFunction()
   [3] Const mutate $9:TPrimitive = Binary read a$7_@0:TPrimitive > read b$8_@1:TPrimitive
   [4] If (read $9:TPrimitive) then:bb2 else:bb1 fallthrough=bb1
 bb2:
@@ -35,10 +35,10 @@ bb1:
 function component(
 ) {
   scope @0 [1:2] deps=[] out=[a$7_@0] {
-    [1] Const mutate a$7_@0:TPrimitive = Call mutate some$2:TFunction()
+    [1] Const mutate a$7_@0:TPrimitive = Call mutate some$1:TFunction()
   }
   scope @1 [2:3] deps=[] out=[b$8_@1] {
-    [2] Const mutate b$8_@1:TPrimitive = Call mutate someOther$4:TFunction()
+    [2] Const mutate b$8_@1:TPrimitive = Call mutate someOther$3:TFunction()
   }
   [3] Const mutate $9:TPrimitive = Binary read a$7_@0:TPrimitive > read b$8_@1:TPrimitive
   if (read $9:TPrimitive) {
@@ -56,7 +56,7 @@ function component$0() {
   const $ = React.useMemoCache();
   let a$7;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    a$7 = some$2();
+    a$7 = some$1();
     $[0] = a$7;
   } else {
     a$7 = $[0];
@@ -65,7 +65,7 @@ function component$0() {
   let b$8;
 
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    b$8 = someOther$4();
+    b$8 = someOther$3();
     $[1] = b$8;
   } else {
     b$8 = $[1];

compiler/forget/src/__tests__/fixtures/hir/type-test-field-load-binary-op.expect.md

@@ -19,8 +19,8 @@ function component() {
 
 ```
 bb0:
-  [1] Const mutate t0$10_@0:TPrimitive = Call mutate makeSomePrimitive$2:TFunction()
-  [2] Const mutate t1$11_@1:TPrimitive = Call mutate makeSomePrimitive$2:TFunction()
+  [1] Const mutate t0$10_@0:TPrimitive = Call mutate makeSomePrimitive$1:TFunction()
+  [2] Const mutate t1$11_@1:TPrimitive = Call mutate makeSomePrimitive$1:TFunction()
   [3] Const mutate x$12_@2:TObject = Object { u: read t0$10_@0:TPrimitive, v: read t1$11_@1:TPrimitive }
   [4] Const mutate u$13:TPrimitive = read x$12_@2.u
   [5] Const mutate v$14:TPrimitive = read x$12_@2.v
@@ -39,10 +39,10 @@ bb1:
 function component(
 ) {
   scope @0 [1:2] deps=[] out=[$10_@0] {
-    [1] Const mutate $10_@0:TPrimitive = Call mutate makeSomePrimitive$2:TFunction()
+    [1] Const mutate $10_@0:TPrimitive = Call mutate makeSomePrimitive$1:TFunction()
   }
   scope @1 [2:3] deps=[] out=[$11_@1] {
-    [2] Const mutate $11_@1:TPrimitive = Call mutate makeSomePrimitive$2:TFunction()
+    [2] Const mutate $11_@1:TPrimitive = Call mutate makeSomePrimitive$1:TFunction()
   }
   scope @2 [3:4] deps=[read $10_@0:TPrimitive, read $11_@1:TPrimitive] out=[x$12_@2] {
     [3] Const mutate x$12_@2:TObject = Object { u: read $10_@0:TPrimitive, v: read $11_@1:TPrimitive }
@@ -66,7 +66,7 @@ function component$0() {
   const $ = React.useMemoCache();
   let t0$10;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    t0$10 = makeSomePrimitive$2();
+    t0$10 = makeSomePrimitive$1();
     $[0] = t0$10;
   } else {
     t0$10 = $[0];
@@ -75,7 +75,7 @@ function component$0() {
   let t1$11;
 
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    t1$11 = makeSomePrimitive$2();
+    t1$11 = makeSomePrimitive$1();
     $[1] = t1$11;
   } else {
     t1$11 = $[1];

compiler/forget/src/__tests__/fixtures/hir/type-test-polymorphic.expect.md

@@ -22,7 +22,7 @@ function component() {
 
 ```
 bb0:
-  [1] Const mutate p$7_@0:TPrimitive = Call mutate makePrimitive$2:TFunction()
+  [1] Const mutate p$7_@0:TPrimitive = Call mutate makePrimitive$1:TFunction()
   [2] Binary read p$7_@0:TPrimitive + read p$7_@0:TPrimitive
   [3] Const mutate o$8_@1:TObject = Object {  }
   [4] Const mutate x$9_@2:TObject[4:8] = Object {  }
@@ -39,7 +39,7 @@ bb0:
 function component(
 ) {
   scope @0 [1:2] deps=[] out=[p$7_@0] {
-    [1] Const mutate p$7_@0:TPrimitive = Call mutate makePrimitive$2:TFunction()
+    [1] Const mutate p$7_@0:TPrimitive = Call mutate makePrimitive$1:TFunction()
   }
   [2] Binary read p$7_@0:TPrimitive + read p$7_@0:TPrimitive
   scope @1 [3:4] deps=[] out=[o$8_@1] {
@@ -64,7 +64,7 @@ function component$0() {
   const $ = React.useMemoCache();
   let p$7;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    p$7 = makePrimitive$2();
+    p$7 = makePrimitive$1();
     $[0] = p$7;
   } else {
     p$7 = $[0];

compiler/forget/src/__tests__/fixtures/hir/type-test-return-type-inference.expect.md

@@ -18,8 +18,8 @@ function component() {
 
 ```
 bb0:
-  [1] Const mutate x$7_@0:TPrimitive = Call mutate foo$2:TFunction()
-  [2] Const mutate y$8_@1:TPrimitive = Call mutate foo$2:TFunction()
+  [1] Const mutate x$7_@0:TPrimitive = Call mutate foo$1:TFunction()
+  [2] Const mutate y$8_@1:TPrimitive = Call mutate foo$1:TFunction()
   [3] Const mutate $9:TPrimitive = Binary read x$7_@0:TPrimitive > read y$8_@1:TPrimitive
   [4] If (read $9:TPrimitive) then:bb2 else:bb1 fallthrough=bb1
 bb2:
@@ -28,7 +28,7 @@ bb2:
   [6] Goto bb1
 bb1:
   predecessor blocks: bb2 bb0
-  [7] Const mutate z$12_@3 = Call mutate foo$2:TFunction()
+  [7] Const mutate z$12_@3 = Call mutate foo$1:TFunction()
   [8] Return
 ```
 
@@ -38,16 +38,16 @@ bb1:
 function component(
 ) {
   scope @0 [1:2] deps=[] out=[x$7_@0] {
-    [1] Const mutate x$7_@0:TPrimitive = Call mutate foo$2:TFunction()
+    [1] Const mutate x$7_@0:TPrimitive = Call mutate foo$1:TFunction()
   }
   scope @1 [2:3] deps=[] out=[y$8_@1] {
-    [2] Const mutate y$8_@1:TPrimitive = Call mutate foo$2:TFunction()
+    [2] Const mutate y$8_@1:TPrimitive = Call mutate foo$1:TFunction()
   }
   [3] Const mutate $9:TPrimitive = Binary read x$7_@0:TPrimitive > read y$8_@1:TPrimitive
   if (read $9:TPrimitive) {
     [5] Const mutate z$10_@2:TObject = Object {  }
   }
-  [7] Const mutate z$12_@3 = Call mutate foo$2:TFunction()
+  [7] Const mutate z$12_@3 = Call mutate foo$1:TFunction()
   return
 }
 
@@ -60,7 +60,7 @@ function component$0() {
   const $ = React.useMemoCache();
   let x$7;
   if ($[0] === Symbol.for("react.memo_cache_sentinel")) {
-    x$7 = foo$2();
+    x$7 = foo$1();
     $[0] = x$7;
   } else {
     x$7 = $[0];
@@ -69,7 +69,7 @@ function component$0() {
   let y$8;
 
   if ($[1] === Symbol.for("react.memo_cache_sentinel")) {
-    y$8 = foo$2();
+    y$8 = foo$1();
     $[1] = y$8;
   } else {
     y$8 = $[1];
@@ -79,7 +79,7 @@ function component$0() {
     const z$10 = {};
   }
 
-  const z$12 = foo$2();
+  const z$12 = foo$1();
 }
 
 ```