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[Qemu-devel] [PULL 06/15] tcg: Allow non-constant control macros
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PULL 06/15] tcg: Allow non-constant control macros |
Date: |
Tue, 9 Jul 2013 07:18:26 -0700 |
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 <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
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 12967fb..c94e255 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
- [Qemu-devel] [PULL 00/15] tcg: remainder and tcg-arm updates, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 01/15] tcg: Add myself to general TCG maintainership, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 02/15] tcg: Split rem requirement from div requirement, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 03/15] tcg-arm: Don't implement rem, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 05/15] tcg-ppc64: Don't implement rem, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 04/15] tcg-ppc: Don't implement rem, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 07/15] tcg: Simplify logic using TCG_OPF_NOT_PRESENT, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 06/15] tcg: Allow non-constant control macros,
Richard Henderson <=
- [Qemu-devel] [PULL 08/15] tcg-arm: Make use of conditional availability of opcodes for divide, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 09/15] tcg-arm: Rename use_armv5_instructions to use_armvt5_instructions, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 10/15] tcg-arm: Simplify logic in detecting the ARM ISA in use, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 11/15] tcg-arm: Use AT_PLATFORM to detect the host ISA, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 13/15] tcg: Move the CIE and FDE header definitions to common code, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 12/15] tcg: Fix high_pc fields in .debug_info, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 14/15] tcg-i386: Use QEMU_BUILD_BUG_ON instead of assert for frame size, Richard Henderson, 2013/07/09
- [Qemu-devel] [PULL 15/15] tcg-arm: Implement tcg_register_jit, Richard Henderson, 2013/07/09