From: Richard Henderson <rth@twiddle.net>
To: qemu-devel@nongnu.org
Cc: aurelien@aurel32.net
Subject: [Qemu-devel] [PATCH 1/5] tcg: Allow non-constant control macros
Date: Thu, 6 Jun 2013 11:05:43 -0700 [thread overview]
Message-ID: <1370541947-909-2-git-send-email-rth@twiddle.net> (raw)
In-Reply-To: <1370541947-909-1-git-send-email-rth@twiddle.net>
This allows TCG_TARGET_HAS_* to be a variable rather than a constant,
which allows easier support for differing ISA levels for the host.
Signed-off-by: Richard Henderson <rth@twiddle.net>
---
tcg/tcg-opc.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tcg/tcg-opc.h b/tcg/tcg-opc.h
index 4246e9c..db5e6e5 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
--
1.8.1.4
next prev parent reply other threads:[~2013-06-06 18:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-06 18:05 [Qemu-devel] [PATCH 0/5] tcg-arm: Runtime detection of architecture Richard Henderson
2013-06-06 18:05 ` Richard Henderson [this message]
2013-06-06 18:05 ` [Qemu-devel] [PATCH 2/5] tcg: Simplify logic using TCG_OPF_NOT_PRESENT Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 3/5] tcg-arm: Make use of conditional availability of opcodes for divide Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 4/5] tcg-arm: Simplify logic in detecting the ARM ISA in use Richard Henderson
2013-06-06 18:05 ` [Qemu-devel] [PATCH 5/5] tcg-arm: Use AT_PLATFORM to detect the host ISA Richard Henderson
2013-06-10 18:42 ` [Qemu-devel] [PATCH 0/5] tcg-arm: Runtime detection of architecture Richard Henderson
2013-06-17 15:56 ` Richard Henderson
2013-06-25 3:44 ` Richard Henderson
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