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authorRichard Henderson2013-05-02 12:35:08 +0200
committerRichard Henderson2013-07-09 16:14:35 +0200
commit4ef76952bd702d29ee4c021f068d85b063fdb928 (patch)
tree723effc39739d8fc54c0223d823a8c9a364e75d0 /tcg
parenttcg-ppc64: Don't implement rem (diff)
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tcg: Allow non-constant control macros
This allows TCG_TARGET_HAS_* to be a variable rather than a constant, which allows easier support for differing ISA levels for the host. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/tcg-opc.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/tcg/tcg-opc.h b/tcg/tcg-opc.h
index 12967fb6ee..c94e25526c 100644
--- a/tcg/tcg-opc.h
+++ b/tcg/tcg-opc.h
@@ -40,7 +40,7 @@ DEF(set_label, 0, 0, 1, TCG_OPF_BB_END)
DEF(call, 0, 1, 2, TCG_OPF_CALL_CLOBBER) /* variable number of parameters */
DEF(br, 0, 0, 1, TCG_OPF_BB_END)
-#define IMPL(X) (X ? 0 : TCG_OPF_NOT_PRESENT)
+#define IMPL(X) (__builtin_constant_p(X) && !(X) ? TCG_OPF_NOT_PRESENT : 0)
#if TCG_TARGET_REG_BITS == 32
# define IMPL64 TCG_OPF_64BIT | TCG_OPF_NOT_PRESENT
#else