Searched hist:"6597 c28d" (Results 1 – 3 of 3) sorted by relevance
| /openbmc/qemu/target/openrisc/ |
| H A D | exception_helper.c | 6597c28d Tue Apr 05 21:43:40 CDT 2016 Richard Henderson <rth@twiddle.net> target/openrisc: Optimize for r0 being zero
The HW does not special-case r0, but the ABI specifies that r0 should
contain 0. If we expose this fact to the optimizer, we can simplify
a lot of the generated code. We must of course verify that r0==0, but
that is trivial to do with a TB flag.
Signed-off-by: Richard Henderson <rth@twiddle.net>
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| H A D | cpu.h | 6597c28d Tue Apr 05 21:43:40 CDT 2016 Richard Henderson <rth@twiddle.net> target/openrisc: Optimize for r0 being zero
The HW does not special-case r0, but the ABI specifies that r0 should
contain 0. If we expose this fact to the optimizer, we can simplify
a lot of the generated code. We must of course verify that r0==0, but
that is trivial to do with a TB flag.
Signed-off-by: Richard Henderson <rth@twiddle.net>
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| H A D | translate.c | 6597c28d Tue Apr 05 21:43:40 CDT 2016 Richard Henderson <rth@twiddle.net> target/openrisc: Optimize for r0 being zero
The HW does not special-case r0, but the ABI specifies that r0 should
contain 0. If we expose this fact to the optimizer, we can simplify
a lot of the generated code. We must of course verify that r0==0, but
that is trivial to do with a TB flag.
Signed-off-by: Richard Henderson <rth@twiddle.net>
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