DrSocalkwe3n/luajit
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Differentiate between IR_KPTR and IR_KKPTR.

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IR_KPTR holds a const pointer to possibly non-const content.
IR_KKPTR holds a const pointer to definitely const content.
Note that only content known by the VM to be const qualifies.
Content tagged as const by users (e.g. const char *) doesn't.
This commit is contained in:
Mike Pall
2011-01-19 00:40:03 +01:00
parent 685dfc3172
commit 925050fe3f
6 changed files with 32 additions and 23 deletions
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4
src/lj_ir.h
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@@ -42,6 +42,7 @@
_(KINT, N , cst, ___) \
_(KGC, N , cst, ___) \
_(KPTR, N , cst, ___) \
_(KKPTR, N , cst, ___) \
_(KNULL, N , cst, ___) \
_(KNUM, N , cst, ___) \
_(KINT64, N , cst, ___) \
@@ -566,7 +567,8 @@ typedef union IRIns {
#define ir_kint64(ir) check_exp((ir)->o == IR_KINT64, mref((ir)->ptr,cTValue))
#define ir_k64(ir) \
check_exp((ir)->o == IR_KNUM || (ir)->o == IR_KINT64, mref((ir)->ptr,cTValue))
#define ir_kptr(ir) check_exp((ir)->o == IR_KPTR, mref((ir)->ptr, void))
#define ir_kptr(ir) \
check_exp((ir)->o == IR_KPTR || (ir)->o == IR_KKPTR, mref((ir)->ptr, void))
LJ_STATIC_ASSERT((int)IRT_GUARD == (int)IRM_W);