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| author | Ingo Molnar <mingo@elte.hu> | 2008-06-20 21:50:20 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-06-21 07:57:24 +0200 |
| commit | 437a0a54eea7b101e8a5b70688009956f6522ed0 (patch) | |
| tree | a0a2b59e4fc40f01d8ad9b5702698f216e79ff49 /Documentation/x86/x86_64 | |
| parent | 7dbceaf9bb68919651901b101f44edd5391ee489 (diff) | |
x86, bitops: make constant-bit set/clear_bit ops faster, gcc workaround
Jeremy Fitzhardinge reported this compiler bug:
Suggestion from Linus: add "r" to the input constraint of the
set_bit()/clear_bit()'s constant 'nr' branch:
Blows up on "gcc version 3.4.4 20050314 (prerelease) (Debian 3.4.3-13)":
CC init/main.o
include2/asm/bitops.h: In function `start_kernel':
include2/asm/bitops.h:59: warning: asm operand 1 probably doesn't match constraints
include2/asm/bitops.h:59: warning: asm operand 1 probably doesn't match constraints
include2/asm/bitops.h:59: warning: asm operand 1 probably doesn't match constraints
include2/asm/bitops.h:59: error: impossible constraint in `asm'
include2/asm/bitops.h:59: error: impossible constraint in `asm'
include2/asm/bitops.h:59: error: impossible constraint in `asm'
Reported-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/x86/x86_64')
0 files changed, 0 insertions, 0 deletions