Bug 107936 - Mesa assembler code uses ENTER/LEAVE instructions for a performance hit.
Summary: Mesa assembler code uses ENTER/LEAVE instructions for a performance hit.
Status: CLOSED RAWHIDE
Alias: None
Product: Red Hat Raw Hide
Classification: Retired
Component: XFree86
Version: 1.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Mike A. Harris
QA Contact: David Lawrence
URL:
Whiteboard:
Keywords:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2003-10-24 18:16 UTC by Mike A. Harris
Modified: 2007-04-18 16:58 UTC (History)
0 users

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Clone Of:
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Last Closed: 2006-01-20 17:06:36 UTC


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Description Mike A. Harris 2003-10-24 18:16:30 UTC
Mesa assembler code uses ENTER/LEAVE instructions which I noticed while
reviewing debugger output.  This incurs severe performance loss due to these
instructions being implemented in microcode according to Intel docs.

This should be optimized to remove ENTER/LEAVE and save/restore registers
manually, etc.


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