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Bug 65800 - branch islands created by ld for far-off branches should use brl instruction
branch islands created by ld for far-off branches should use brl instruction
Product: Red Hat Linux
Classification: Retired
Component: binutils (Show other bugs)
ia64 Linux
high Severity medium
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Assigned To: Jakub Jelinek
: FutureFeature
Depends On:
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Reported: 2002-05-31 16:00 EDT by Satish Guggilla
Modified: 2008-05-01 11:38 EDT (History)
0 users

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Fixed In Version:
Doc Type: Enhancement
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Last Closed: 2003-03-07 13:17:14 EST
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Description Satish Guggilla 2002-05-31 16:00:00 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)

Description of problem:
When creating branch islands for branches whose targets are far off, GNU ld 
currently sets up the target address in a branch register and does a branch to 
the target address in this branch register. It will be more efficient to use 
brl instruction instead.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
The use of BRL in binutils/bfd/elfxx-ia64.c is turned off with 
undef USE_BRL	.

Additional info:
Comment 1 Jeff Law 2003-03-07 13:17:14 EST
The current development binutils/bfd sources were recently modified to
use BRL instructions.

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