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| author | Richard Henderson <rth@twiddle.net> | 2012-09-24 14:21:40 -0700 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2012-10-06 18:48:40 +0200 |
| commit | 0aed257f08444feb6269d0c302b35a8fb10fcb3f (patch) | |
| tree | 17afe2f486f714ed5b6c3460f4dbec15e6563c3e /tcg/optimize.c | |
| parent | bcc66562ad185e9c2a667b00426f625e2489bda9 (diff) | |
| download | focaccia-qemu-0aed257f08444feb6269d0c302b35a8fb10fcb3f.tar.gz focaccia-qemu-0aed257f08444feb6269d0c302b35a8fb10fcb3f.zip | |
tcg: Add TCG_COND_NEVER, TCG_COND_ALWAYS
There are several cases that can be handled easier inside both translators and code generators if we have out-of-band values for conditions. It's easy enough to handle ALWAYS and NEVER in the natural way inside the tcg middle-end. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'tcg/optimize.c')
| -rw-r--r-- | tcg/optimize.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tcg/optimize.c b/tcg/optimize.c index 35532a1e03..edb2b0ea90 100644 --- a/tcg/optimize.c +++ b/tcg/optimize.c @@ -321,6 +321,8 @@ static TCGArg do_constant_folding_cond(TCGOpcode op, TCGArg x, return (uint32_t)temps[x].val <= (uint32_t)temps[y].val; case TCG_COND_GTU: return (uint32_t)temps[x].val > (uint32_t)temps[y].val; + default: + break; } break; case 64: @@ -345,6 +347,8 @@ static TCGArg do_constant_folding_cond(TCGOpcode op, TCGArg x, return (uint64_t)temps[x].val <= (uint64_t)temps[y].val; case TCG_COND_GTU: return (uint64_t)temps[x].val > (uint64_t)temps[y].val; + default: + break; } break; } @@ -362,6 +366,8 @@ static TCGArg do_constant_folding_cond(TCGOpcode op, TCGArg x, case TCG_COND_LEU: case TCG_COND_EQ: return 1; + default: + break; } } else if (temps[y].state == TCG_TEMP_CONST && temps[y].val == 0) { switch (c) { |