Feature(compiler): Optimize by llvm-opt on IR level before llvm-llc

ovr · ovr · commit 579668824bfd · 2018-12-08T07:29:09.000+09:00
diff --git a/README.md b/README.md
@@ -36,7 +36,7 @@ Put it in `calculate-pi.ts`
         return 4.0 * inside / cycles;
     }
 
-    console_log(calculatePI(100000));
+    console_log(calculatePI(1000000000));
 }
 ```
 
diff --git a/src/cli.ts b/src/cli.ts
@@ -10,7 +10,7 @@ import DiagnosticHostInstance from "./diagnostic.host";
 import UnsupportedError from "./backend/error/unsupported.error";
 import {existsSync, mkdirSync, unlinkSync} from "fs";
 import {execFileSync} from "child_process";
-import {executeLLCSync} from "./utils";
+import {executeLLCSync, executeOptSync} from "./utils";
 
 interface CommandLineArguments {
     args: string[];
@@ -74,13 +74,20 @@ try {
 
     const optimizationLevel = `-O${cliOptions.optimizationLevel}`;
 
+    executeOptSync([
+        optimizationLevel,
+        path.join(outputPath, 'main.bc'),
+        '-o', path.join(outputPath, 'main.bc')
+    ]);
+
     executeLLCSync([
         optimizationLevel,
         // Fully relocatable, position independent code
         '-relocation-model=pic',
         '-filetype=obj', path.join(outputPath, 'main.bc'),
         '-o', path.join(outputPath, 'main.o'),
     ]);
+
     execFileSync("c++", [
         optimizationLevel,
         path.join(outputPath, 'main.o'),
diff --git a/src/utils.ts b/src/utils.ts
@@ -17,4 +17,11 @@ export function executeLLCSync(options: Array<any>) {
         path.join(getLLVMBinDirectory(), 'llc'),
         options
     )
-}
+}
+
+export function executeOptSync(options: Array<any>) {
+    child_process.execFileSync(
+        path.join(getLLVMBinDirectory(), 'opt'),
+        options
+    )
+}
diff --git a/tests/snapshots/examples/calculate-pi.ts b/tests/snapshots/examples/calculate-pi.ts
@@ -15,5 +15,5 @@
         return 4.0 * inside / cycles;
     }
 
-    console_log(calculatePI(1000000));
+    console_log(calculatePI(1000000000));
 }

Original file line number	Diff line number	Diff line change
@@ -36,7 +36,7 @@ Put it in `calculate-pi.ts`
`36`	`36`	`return 4.0 * inside / cycles;`
`37`	`37`	`}`
`38`	`38`
`39`		`- console_log(calculatePI(100000));`
	`39`	`+ console_log(calculatePI(1000000000));`
`40`	`40`	`}`
`41`	`41`	```
`42`	`42`
Original file line number	Diff line number	Diff line change
`@@ -15,5 +15,5 @@`
`15`	`15`	`return 4.0 * inside / cycles;`
`16`	`16`	`}`
`17`	`17`
`18`		`- console_log(calculatePI(1000000));`
	`18`	`+ console_log(calculatePI(1000000000));`
`19`	`19`	`}`