RESOLVED FIXED 149254
Calling a float function on x86 in WebAssembly incorrectly returns a double 
https://bugs.webkit.org/show_bug.cgi?id=149254
Summary Calling a float function on x86 in WebAssembly incorrectly returns a double
Sukolsak Sakshuwong
Reported 2015-09-17 02:08:30 PDT
In WebAssembly on x86 (32-bit), when we call a function that returns a float or a double, we use the FSTP instruction to read the return value from the FPU register stack. The FSTP instruction converts the value to single-precision or double-precision floating-point format, depending on the destination operand. Currently, we always use double as the destination. This is wrong. We should use the correct type.
Attachments
Patch (5.67 KB, patch)
2015-09-17 02:16 PDT, Sukolsak Sakshuwong 		no flags
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Sukolsak Sakshuwong
Comment 1 2015-09-17 02:16:07 PDT
Created attachment 261380 [details] Patch
Michael Saboff
Comment 2 2015-09-17 08:01:27 PDT
Comment on attachment 261380 [details] Patch r=me
WebKit Commit Bot
Comment 3 2015-09-17 10:40:23 PDT
Comment on attachment 261380 [details] Patch Clearing flags on attachment: 261380 Committed r189918: <http://trac.webkit.org/changeset/189918>
WebKit Commit Bot
Comment 4 2015-09-17 10:40:27 PDT
All reviewed patches have been landed. Closing bug.
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