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Implement the "live" code to explicitly tell a register is live.

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*include/lightning.h, lib/lightning.c: Add the new jit_live code
	to explicitly mark a register as live. It is required to avoid
	assuming functions always return a value in the gpr and fpr return
	register, and to avoid the need of some very specialized codes
	that vary too much from backend to backend, to instruct the
	optimization code the return register is live.

	* lib/jit_arm.c, lib/jit_mips.c, lib/jit_ppc.c, lib/jit_print.c,
	lib/jit_x86.c: Update for the new jit_live code.

	* check/ret.ok, check/ret.tst: New files implementing a simple
	test case that would previously fail at least in ix86/x86_64.

	* check/Makefile.am: Update for new "ret" test case.
This commit is contained in:
pcpa 2013-02-05 14:14:25 -02:00
parent 7b2c9cfb2a
commit 60c1c545fc
12 changed files with 140 additions and 32 deletions
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2
include/lightning.h
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@ -101,6 +101,8 @@ typedef struct jit_state jit_state_t;
typedef enum {
#define jit_data(u,v,w) _jit_data(_jit,u,v,w)
jit_code_data,
#define jit_live(u) jit_new_node_w(jit_code_live, u)
jit_code_live,
jit_code_save, jit_code_load,
#define jit_name(u) _jit_name(_jit,u)
jit_code_name,