| commit | 79c2c2aa6364d7b4a17e353eff4b8b58085c468a | |
| author | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Tue, 25 Jun 2002 20:39:18 +0000 (25 20:39 +0000) | ||
| committer | amylaar <amylaar@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Tue, 25 Jun 2002 20:39:18 +0000 (25 20:39 +0000) | ||
| tree | 36fecfa562a5580522328656aed4a9f40a513966 | treesnapshot (tar.gz zip) |
| parent | daae790854914325c68681f7f852f5964689adc5 | commitdiff |
* config/sh/lib1funcs.asm (udivdi3): Make first divide step
produce a 32 bit result before normalization, then normalize with a
left shift. Compute approximative error of 2nd reciprocal
approximation in 2's complement. Fix mask generation from upper
longword of second divide stage result.
For large divisor, fix shift count used to truncate first stage
divide result; make decision if to adjust upwards based on comparison
of higher parts of normalized values.
(udivdi): Likewise. Undo normalization of result for large divisor
case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@54993 138bc75d-0d04-0410-961f-82ee72b054a4
produce a 32 bit result before normalization, then normalize with a
left shift. Compute approximative error of 2nd reciprocal
approximation in 2's complement. Fix mask generation from upper
longword of second divide stage result.
For large divisor, fix shift count used to truncate first stage
divide result; make decision if to adjust upwards based on comparison
of higher parts of normalized values.
(udivdi): Likewise. Undo normalization of result for large divisor
case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@54993 138bc75d-0d04-0410-961f-82ee72b054a4
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| gcc/config/sh/lib1funcs.asm | diffblobblamehistory |