diff options
| author | Alon Zakai <alonzakai@gmail.com> | 2013-02-18 15:47:07 -0800 |
|---|---|---|
| committer | Alon Zakai <alonzakai@gmail.com> | 2013-02-18 15:47:07 -0800 |
| commit | 06b262b3f17f74d476f94ff87af58c70ab070eb1 (patch) | |
| tree | c2442e1cf2967d751e2c8b751fda33a0259d5472 /emcc | |
| parent | 3e3dc0bbd3029200a6d4fa3866444be54ec27616 (diff) | |
run closure in -O3, it makes sense there with the other unsafe optimizations
Diffstat (limited to 'emcc')
| -rwxr-xr-x | emcc | 21 |
1 files changed, 15 insertions, 6 deletions
@@ -159,10 +159,17 @@ Options that are modified or new in %s include: -O2 As -O1, plus the relooper (loop recreation), plus LLVM -O2 optimizations -O3 As -O2, plus dangerous optimizations that may - break the generated code! This is not - recommended at all, see the wiki for more - details (you can try -O2 and then add - dangerous optimizations one by one). + break the generated code! This turns on + + INLINING_LIMIT = 0 + DOUBLE_MODE = 0 + PRECISE_I64_MATH = 0 + and the closure compiler + + This is not recommended at all. A better idea + is to try each of these separately on top of + -O2 to see what works. See the wiki for more + information. -s OPTION=VALUE JavaScript code generation option passed into the emscripten compiler. For the @@ -206,12 +213,13 @@ Options that are modified or new in %s include: (see --llvm-opts), setting this to 1 has no effect. - --closure <on> 0: No closure compiler (default) + --closure <on> 0: No closure compiler (default in -O2 and below) 1: Run closure compiler. This greatly reduces code size and may in some cases increase runtime speed (although the opposite can also occur). Note that it takes time to run, and - may require some changes to the code. + may require some changes to the code. This + is run by default in -O3. --js-transform <cmd> <cmd> will be called on the generated code before it is optimized. This lets you modify @@ -756,6 +764,7 @@ try: if llvm_opts is None: llvm_opts = LLVM_OPT_LEVEL[opt_level] if llvm_lto is None: llvm_lto = llvm_opts > 0 if opt_level <= 0: keep_debug = True # always keep debug in -O0 + if closure is None and opt_level == 3: closure = True if DEBUG: start_time = time.time() # done after parsing arguments, which might affect debug state |