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tcg/optimize: Simplify sign bit test in fold_shift
authorRichard Henderson <richard.henderson@linaro.org>
Fri, 20 Dec 2024 03:38:54 +0000 (19:38 -0800)
committerRichard Henderson <richard.henderson@linaro.org>
Tue, 24 Dec 2024 16:32:15 +0000 (08:32 -0800)
commit4ed2ba3f4abe6b3c03a905d44cdd18b3a3c1ce33
tree29edfd27f0585d3147dc405ae40b57280d623c39tree | snapshot
parent4e9ce6a2ec73d42e12aedf21b255dc00b378fc8dcommit | diff
tcg/optimize: Simplify sign bit test in fold_shift

Merge the two conditions, sign != 0 && !(z_mask & sign),
by testing ~z_mask & sign.   If sign == 0, the logical and
will produce false.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
tcg/optimize.c diff | blob | history
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