config/rs6000/rs6000.c

15    License for more details.
400    compiler has been more restrictive which types can do PRE_MODIFY instead of
1626    opportunities for more efficient use of the system bus. Unless a
2514 	      /* Indicate if the mode takes more than 1 physical register.  If
2537 		  /* PRE_MODIFY is more restricted than PRE_INC/PRE_DEC in that
3748   /* E500mc does "better" if we inline more aggressively.  Respect the
4720 	 vectorized are weighted more heavily.  The value here is
6121      masks will be all 1's.  We are guaranteed more than one transition.  */
9245    rs6000_option_override_internal for more details.
9273       /* Otherwise fall through to more conventional ABI rules.  */
10373        store the whole arg to memory is often more efficient than code
10759    PARALLEL, perhaps using more than one register type, this function
11638 	  /* Ensure that we don't find any more args in regs.
16466    significant 0's, then one or more 1's, then zero or more 0's.  */
16504    to perform a left shift.  It must have SHIFTOP or more least
16641   /* The offset for the second addr must be 8 more than the first addr.  */
17059      look at cases where we don't need any extra registers, and one or more
17825    in some cases it is preferable to use a more restrictive class.
19919 	 mispredicted taken branch is more expensive than a
21621   /* The situation is more complicated with load multiple.  We'd
22094      and local variables are more than the space needed to save all
22363   /* We can't do it if the called function has more vector parameters
24450 	 from the procedure more often.  */
24845      is more efficient than an addis, addi pair.  The second condition
25631       /* If we have to restore more than two FP registers, branch to the
26928 rs6000_variable_issue_1 (rtx_insn *insn, int more)
26934       cached_can_issue_more = more;
26946     return more;
26953         cached_can_issue_more = more > 2 ? more - 2 : 0;
26955         cached_can_issue_more = more - 1;
26963   cached_can_issue_more = more - 1;
26968 rs6000_variable_issue (FILE *stream, int verbose, rtx_insn *insn, int more)
26970   int r = rs6000_variable_issue_1 (insn, more);
26972     fprintf (stream, "// rs6000_variable_issue (more = %d) = %d\n", more, r);
27948                      and adjust it's priority so that it is more likely to
28011                          more likely to stay there */
28032                  list, and adjust its priority so that it is more likely to
28584    - no more vacant issue slots remain in the current dispatch group.
28950   and may appear more than once (e.g., 'vector bool char') in a
30559       /* When optimizing for size, MEM should be slightly more expensive
30868       /* It's more expensive to move CR_REGS than CR0_REGS because of the
30873       /* For those processors that have slow LR/CTR moves, make them more
31076   /* This is a tad more complicated, since the fnma_optab is for
33615    operations are split immediately during RTL generation to allow for more
34181    may introduce more expensive code than it replaces.  To handle these
35260      optimizations we may mark the same swap more than once.  Also