llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-15 04:30:12 +00:00

History

Benjamin Kramer 2746000f4f Add APFloat::getExactInverse. The idea is, that if an ieee 754 float is divided by a power of two, we can turn the division into a cheaper multiplication. This function sees if we can get an exact multiplicative inverse for a divisor and returns it if possible. This is the hard part of PR9587. I tested many inputs against llvm-gcc's frotend implementation of this optimization and didn't find any difference. However, floating point is the land of weird edge cases, so any review would be appreciated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128545 91177308-0d34-0410-b5e6-96231b3b80d8	2011-03-30 15:42:27 +00:00
..
llvm	Add APFloat::getExactInverse.	2011-03-30 15:42:27 +00:00
llvm-c	C-API: Include DataTypes.h instead of stdint.h.	2011-03-29 02:30:34 +00:00

Benjamin Kramer 2746000f4f Add APFloat::getExactInverse.

The idea is, that if an ieee 754 float is divided by a power of two, we can
turn the division into a cheaper multiplication. This function sees if we can
get an exact multiplicative inverse for a divisor and returns it if possible.

This is the hard part of PR9587.

I tested many inputs against llvm-gcc's frotend implementation of this
optimization and didn't find any difference. However, floating point is the
land of weird edge cases, so any review would be appreciated.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128545 91177308-0d34-0410-b5e6-96231b3b80d8

2011-03-30 15:42:27 +00:00

llvm

Add APFloat::getExactInverse.

2011-03-30 15:42:27 +00:00

llvm-c

C-API: Include DataTypes.h instead of stdint.h.

2011-03-29 02:30:34 +00:00