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| author | Chang S. Bae <chang.seok.bae@intel.com> | 2018-08-15 23:22:21 +0300 |
|---|---|---|
| committer | Cyrill Gorcunov <gorcunov@gmail.com> | 2018-08-16 00:01:31 +0300 |
| commit | a578634b61615a4a0d5e51b1d1b046efdbd9867d (patch) | |
| tree | 407145147c4fde868383826d2c4b0599307dee33 /doc/opt_var.txt | |
| parent | ccd2d5c542c27c53f8dd547c817303845c7ca6dc (diff) | |
| download | nasm-a578634b61615a4a0d5e51b1d1b046efdbd9867d.tar.gz | |
optimization: Introduce new flag to turn-off selectively
While configuring optimization in a level is conventional,
a certain optimization tends to conflict with some pragma.
For example, jump match conflicts with Mach-O's
"subsections-via-symbols" macro.
This configurability will workaround such conflicts.
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Diffstat (limited to 'doc/opt_var.txt')
| -rw-r--r-- | doc/opt_var.txt | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/opt_var.txt b/doc/opt_var.txt index 4482e5d8..af15c03d 100644 --- a/doc/opt_var.txt +++ b/doc/opt_var.txt @@ -6,7 +6,8 @@ GLOBAL variables: - optimizing -1 flags nasm 0.98 compatible operation; + optimizing optimization meta data (with level and flag info) + .level -1 flags nasm 0.98 compatible operation; offsets usually are explicit (short/near) no optimization passes 0 flags non-optimized assembly; forward @@ -17,7 +18,8 @@ GLOBAL variables: the actual recommended minimum setting optimization passes (2 or more, plus passes 1 and 2 will be required) - + .flag 0 allow all optimizations + 1 disallow jump match optimization pass0 0 flags an optimizer pass (multiple passes) 1 flags pass1 (define labels) |