Bug 133764

Summary: make sdiv a template on armv7s to remove duplicate code in dfg
Product: WebKit Reporter: Alex Christensen <achristensen>
Component: JavaScriptCoreAssignee: Alex Christensen <achristensen>
Severity: Normal CC: benjamin, dbates, fpizlo, ggaren
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Description Flags
Patch dbates: review+

Description Alex Christensen 2014-06-11 14:07:44 PDT
While playing with the css jit I noticed that sdiv is very similar on APPLE_ARMV7S and ARM64.  Why not unite this code?
Comment 1 Alex Christensen 2014-06-11 14:08:53 PDT
Created attachment 232902 [details]
Comment 2 Alex Christensen 2014-06-13 14:02:39 PDT
Created attachment 233074 [details]
Comment 3 Daniel Bates 2014-06-18 09:27:52 PDT
Comment on attachment 233074 [details]

View in context: https://bugs.webkit.org/attachment.cgi?id=233074&action=review

> Source/JavaScriptCore/assembler/ARMv7Assembler.h:1520
> +        COMPILE_ASSERT(datasize == 32);        

Does this compile? I mean, COMPILE_ASSERT() takes two arguments: a predicate and a error message to be shown if the predicate evaluates to false. Moreover, the blog post <https://www.webkit.org/blog/3172/webkit-and-cxx11/> implies that we should explicitly use static_assert() in new C++ code instead of the COMPILE_ASSERT() macro function (even though it calls through to static_assert()) since we require ports to build WebKit with compilers that supports the C++11 static_assert feature.
Comment 4 Alex Christensen 2014-06-18 10:36:51 PDT
(In reply to comment #3)
I'll use static_assert and double check that it compiles.
Comment 5 Alex Christensen 2014-06-18 11:06:51 PDT