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[Qemu-devel] [PATCH 03/13] tcg: add temp_sync()
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PATCH 03/13] tcg: add temp_sync() |
Date: |
Thu, 27 Sep 2012 19:15:03 +0200 |
Add a new function temp_sync() to synchronize the canonical location
of a temp with the value in the corresponding register, but without
freeing the associated register. Rewrite temp_save() to call
temp_sync() followed by temp_dead().
Signed-off-by: Aurelien Jarno <address@hidden>
---
tcg/tcg.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 2ac7097..fb2223f 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1545,31 +1545,28 @@ static inline void temp_dead(TCGContext *s, int temp)
}
}
-/* save a temporary to memory. 'allocated_regs' is used in case a
+/* sync a temporary to memory. 'allocated_regs' is used in case a
temporary registers needs to be allocated to store a constant. */
-static void temp_save(TCGContext *s, int temp, TCGRegSet allocated_regs)
+static inline void temp_sync(TCGContext *s, int temp, TCGRegSet allocated_regs)
{
TCGTemp *ts;
- int reg;
ts = &s->temps[temp];
if (!ts->fixed_reg) {
switch(ts->val_type) {
case TEMP_VAL_REG:
- tcg_reg_free(s, ts->reg);
- break;
- case TEMP_VAL_DEAD:
- ts->val_type = TEMP_VAL_MEM;
+ tcg_reg_sync(s, ts->reg);
break;
case TEMP_VAL_CONST:
- reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type],
- allocated_regs);
- if (!ts->mem_allocated)
- temp_allocate_frame(s, temp);
- tcg_out_movi(s, ts->type, reg, ts->val);
- tcg_out_st(s, ts->type, reg, ts->mem_reg, ts->mem_offset);
- ts->val_type = TEMP_VAL_MEM;
+ ts->reg = tcg_reg_alloc(s, tcg_target_available_regs[ts->type],
+ allocated_regs);
+ ts->val_type = TEMP_VAL_REG;
+ s->reg_to_temp[ts->reg] = temp;
+ ts->mem_coherent = 0;
+ tcg_out_movi(s, ts->type, ts->reg, ts->val);
+ tcg_reg_sync(s, ts->reg);
break;
+ case TEMP_VAL_DEAD:
case TEMP_VAL_MEM:
break;
default:
@@ -1578,6 +1575,14 @@ static void temp_save(TCGContext *s, int temp, TCGRegSet
allocated_regs)
}
}
+/* save a temporary to memory. 'allocated_regs' is used in case a
+ temporary registers needs to be allocated to store a constant. */
+static inline void temp_save(TCGContext *s, int temp, TCGRegSet allocated_regs)
+{
+ temp_sync(s, temp, allocated_regs);
+ temp_dead(s, temp);
+}
+
/* save globals to their canonical location and assume they can be
modified be the following code. 'allocated_regs' is used in case a
temporary registers needs to be allocated to store a constant. */
--
1.7.10.4
- Re: [Qemu-devel] [PATCH 07/13] tcg: rewrite tcg_reg_alloc_mov(), (continued)
- [Qemu-devel] [PATCH 05/13] tcg: rework liveness analysis, Aurelien Jarno, 2012/09/27
- [Qemu-devel] [PATCH 04/13] tcg: sync output arguments on liveness request, Aurelien Jarno, 2012/09/27
- [Qemu-devel] [PATCH 06/13] tcg: improve tcg_reg_alloc_movi(), Aurelien Jarno, 2012/09/27
- [Qemu-devel] [PATCH 02/13] tcg: add tcg_reg_sync(), Aurelien Jarno, 2012/09/27
- [Qemu-devel] [PATCH 03/13] tcg: add temp_sync(),
Aurelien Jarno <=
- [Qemu-devel] [PATCH 01/13] tcg: add temp_dead(), Aurelien Jarno, 2012/09/27