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| author | David S. Miller <davem@redhat.com> | 2002-05-10 05:50:11 -0700 |
|---|---|---|
| committer | David S. Miller <davem@gcc.gnu.org> | 2002-05-10 05:50:11 -0700 |
| commit | cf40ea15f61a4535859ca50195eb58a63e3de1ba (patch) | |
| tree | b339206e3fbe7651c9692cd72f387b4671880f3f /gcc/rtl.h | |
| parent | 1a499b9250dfd05a03485d281e873b437d67bc9e (diff) | |
| download | gcc-cf40ea15f61a4535859ca50195eb58a63e3de1ba.zip gcc-cf40ea15f61a4535859ca50195eb58a63e3de1ba.tar.gz gcc-cf40ea15f61a4535859ca50195eb58a63e3de1ba.tar.bz2 | |
rtl.h (struct rtx_def): Document unchanging and in_struct flags more accurately.
2002-05-09 David S. Miller <davem@redhat.com>
* rtl.h (struct rtx_def): Document unchanging and in_struct flags
more accurately.
(INSN_ANNULLED_BRANCH_P): Only valid for JUMP_INSN and CALL_INSN, fix
comment.
(INSN_FROM_TARGET_P): Valid also for CALL_INSN.
* doc/rtl.texi: Document these macros more accurately.
* recog.c (whole file): Only mess with INSN_ANNULLED_BRANCH_P for
JUMP_INSNs and CALL_INSNs.
* resource.c (whole file): Only mess with INSN_ANNULLED_BRANCH_P
or INSN_FROM_TARGET_P if the code is appropriate.
From-SVN: r53360
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 12 |
1 files changed, 4 insertions, 8 deletions
@@ -140,8 +140,7 @@ struct rtx_def 1 in a SYMBOL_REF if it addresses something in the per-function constants pool. 1 in a CALL_INSN, NOTE, or EXPR_LIST for a const or pure call. - 1 in an INSN in the delay slot of a branch insn if an annulling branch - should be used. */ + 1 in a JUMP_INSN or CALL_INSN of an annulling branch. */ unsigned int unchanging : 1; /* 1 in a MEM or ASM_OPERANDS expression if the memory reference is volatile. 1 in an INSN, CALL_INSN, JUMP_INSN, CODE_LABEL, BARRIER, or NOTE @@ -168,7 +167,6 @@ struct rtx_def 1 in an INSN, JUMP_INSN, or CALL_INSN if insn is in a delay slot and from the target of a branch. Valid from reorg until end of compilation; cleared before used. - 1 in an INSN in a delay slot that is the target of a branch, during reorg. 1 in an INSN or related rtx if this insn is dead code. Valid only during dead-code elimination phase; cleared before use. */ unsigned int in_struct : 1; @@ -539,11 +537,9 @@ do { \ #define SIBLING_CALL_P(RTX) \ (RTL_FLAG_CHECK1("SIBLING_CALL_P", (RTX), CALL_INSN)->jump) -/* 1 if RTX is an insn in the delay slot of a branch insn for which an - annulling branch should be used. */ +/* 1 if RTX is an insn that is an annulling branch. */ #define INSN_ANNULLED_BRANCH_P(RTX) \ - (RTL_FLAG_CHECK2("INSN_ANNULLED_BRANCH_P", (RTX), INSN, \ - JUMP_INSN)->unchanging) + (RTL_FLAG_CHECK2("INSN_ANNULLED_BRANCH_P", (RTX), JUMP_INSN, CALL_INSN)->unchanging) /* 1 if RTX is an insn that is dead code. Valid only for dead-code elimination phase. */ @@ -555,7 +551,7 @@ do { \ executed if the branch is taken. For annulled branches with this bit clear, the insn should be executed only if the branch is not taken. */ #define INSN_FROM_TARGET_P(RTX) \ - (RTL_FLAG_CHECK2("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN)->in_struct) + (RTL_FLAG_CHECK3("INSN_FROM_TARGET_P", (RTX), INSN, JUMP_INSN, CALL_INSN)->in_struct) #define ADDR_DIFF_VEC_FLAGS(RTX) X0ADVFLAGS(RTX, 4) |