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From: | Stefan Weil |
Subject: | Re: [Qemu-devel] [PATCH 3/4] tcg: Move tcg_target_get_call_iarg_regs_count to tcg.c |
Date: | Thu, 13 Sep 2012 07:31:53 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux i686; rv:15.0) Gecko/20120827 Thunderbird/15.0 |
Am 12.09.2012 22:59, schrieb Aurelien Jarno:
On Wed, Sep 12, 2012 at 10:44:37PM +0200, Stefan Weil wrote:The TCG targets no longer need individual implementations. Signed-off-by: Stefan Weil <address@hidden> --- tcg/arm/tcg-target.c | 6 ------ tcg/hppa/tcg-target.c | 6 ------ tcg/i386/tcg-target.c | 6 ------ tcg/ia64/tcg-target.c | 6 ------ tcg/mips/tcg-target.c | 6 ------ tcg/ppc/tcg-target.c | 6 ------ tcg/ppc64/tcg-target.c | 6 ------ tcg/s390/tcg-target.c | 5 ----- tcg/sparc/tcg-target.c | 6 ------ tcg/tcg.c | 7 ++++++- tcg/tci/tcg-target.c | 6 ------ 11 files changed, 6 insertions(+), 60 deletions(-)
[...]
diff --git a/tcg/tcg.c b/tcg/tcg.c index a4e7f42..53316f6 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -89,7 +89,6 @@ static void tcg_out_st(TCGContext *s, TCGType type, TCGReg arg, TCGReg arg1, tcg_target_long arg2); static int tcg_target_const_match(tcg_target_long val, const TCGArgConstraint *arg_ct); -static int tcg_target_get_call_iarg_regs_count(int flags);TCGOpDef tcg_op_defs[] = {#define DEF(s, oargs, iargs, cargs, flags) { #s, oargs, iargs, cargs, iargs + oargs + cargs, flags }, @@ -182,6 +181,12 @@ int gen_new_label(void)#include "tcg-target.c" +/* Maximum number of register used for input function arguments. */+static inline int tcg_target_get_call_iarg_regs_count(int flags) +{ + return ARRAY_SIZE(tcg_target_call_iarg_regs); +} +Do we really need a function for that, given that it has only one caller? For me ARRAY_SIZE(tcg_target_call_iarg_regs) is even more understandable than tcg_target_get_call_iarg_regs_count().
I agree. tcg_target_get_call_iarg_regs_count can be removed completely, but only if we find a solution for the problem which Peter Maydell found: some code accesses tcg_target_call_iarg_regs unconditionally even for x86 32 bit, so for the moment, we cannot reduce its size to 0. Stefan
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