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target-arm: convert add_cc and sub_cc helpers to TCG

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Now that the setcond TCG op is available, it's possible to replace
add_cc and sub_cc helpers by TCG code. The code generated by TCG is
actually very close to the one generated by GCC for the helper, and
this avoid all the consequences of using an helper: globals saved back
to memory, no possible optimization, call overhead, etc.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Aurelien Jarno 2012-10-05 15:04:44 +01:00 • committed by Peter Maydell
parent 66c374de8a
commit 72485ec4f6
3 changed files with 48 additions and 40 deletions
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2
target-arm/helper.h
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@ -142,9 +142,7 @@ DEF_HELPER_2(recpe_u32, i32, i32, env)
DEF_HELPER_2(rsqrte_u32, i32, i32, env)
DEF_HELPER_5(neon_tbl, i32, env, i32, i32, i32, i32)
DEF_HELPER_3(add_cc, i32, env, i32, i32)
DEF_HELPER_3(adc_cc, i32, env, i32, i32)
DEF_HELPER_3(sub_cc, i32, env, i32, i32)
DEF_HELPER_3(sbc_cc, i32, env, i32, i32)
DEF_HELPER_3(shl, i32, env, i32, i32)