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| author | Richard Henderson | 2021-08-26 21:04:46 +0200 |
|---|---|---|
| committer | Richard Henderson | 2021-10-29 05:55:07 +0200 |
| commit | 57fe5c6df21c05af11435b2ed426a42ee3345298 (patch) | |
| tree | ad89dde9ce08308cdc99f128fd71fc7e2f25286a /include | |
| parent | tcg/optimize: Use fold_xx_to_i for rem (diff) | |
| download | qemu-57fe5c6df21c05af11435b2ed426a42ee3345298.tar.gz qemu-57fe5c6df21c05af11435b2ed426a42ee3345298.tar.xz qemu-57fe5c6df21c05af11435b2ed426a42ee3345298.zip | |
tcg/optimize: Optimize sign extensions
Certain targets, like riscv, produce signed 32-bit results.
This can lead to lots of redundant extensions as values are
manipulated.
Begin by tracking only the obvious sign-extensions, and
converting them to simple copies when possible.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'include')
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