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ARM: Do not emit a nop stack adjust instruction.

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lib/jit_arm-cpu.c: Only adjust stack pointer in prolog if
	need stack space, that is, do not emit a nop instruction
	subtracting zero from the stack pointer.
This commit is contained in:
pcpa 2014-04-05 17:14:04 -03:00
parent 16384ff2fe
commit 6726b2b8f5
2 changed files with 8 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2014-04-05 Paulo Andrade <pcpa@gnu.org>
lib/jit_arm-cpu.c: Only adjust stack pointer in prolog if
need stack space, that is, do not emit a nop instruction
subtracting zero from the stack pointer.
2014-04-04 Paulo Andrade <pcpa@gnu.org> 2014-04-04 Paulo Andrade <pcpa@gnu.org>
* lib/jit_disasm.c: Correct a crash in the doc/printf example * lib/jit_disasm.c: Correct a crash in the doc/printf example

3
lib/jit_arm-cpu.c
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@ -3725,7 +3725,8 @@ _prolog(jit_state_t *_jit, jit_node_t *node)
PUSH(0x3ff|(1<<_FP_REGNO)|(1<<_LR_REGNO)); PUSH(0x3ff|(1<<_FP_REGNO)|(1<<_LR_REGNO));
} }
movr(_FP_REGNO, _SP_REGNO); movr(_FP_REGNO, _SP_REGNO);
subi(_SP_REGNO, _SP_REGNO, _jitc->function->stack); if (_jitc->function->stack)
subi(_SP_REGNO, _SP_REGNO, _jitc->function->stack);
} }
static void static void