[wasm][asm.js] Adding custom asm.js lexer.

src/flag-definitions.h

Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index e5dcfae2d303195e26d7549358281d76cb523ab6..4eee7562d62cfaa4ef64d7dd44605302adbec21f 100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -546,9 +546,14 @@ DEFINE_BOOL(wasm_loop_assignment_analysis, true,
             "perform loop assignment analysis for WASM")
 
 DEFINE_BOOL(validate_asm, false, "validate asm.js modules before compiling")
+DEFINE_BOOL(fast_validate_asm, false,
+            "validate asm.js modules before compiling")
+DEFINE_IMPLICATION(fast_validate_asm, validate_asm)

[vogelheim, 2017/03/16 12:46:48]

I don't see these being used in this CL. Is this intentional?

(Should be fine, since you'll almost certainly need those flags in a subsequent
CL anyhow.)

[bradn, 2017/03/16 17:03:15]

Bad merge, will remove for this CL.

 DEFINE_BOOL(suppress_asm_messages, false,
             "don't emit asm.js related messages (for golden file testing)")
 DEFINE_BOOL(trace_asm_time, false, "log asm.js timing info to the console")
+DEFINE_BOOL(trace_asm_scanner, false,
+            "log tokens encountered by asm.js scanner")
 
 DEFINE_BOOL(dump_wasm_module, false, "dump WASM module bytes")
 DEFINE_STRING(dump_wasm_module_path, NULL, "directory to dump wasm modules to")