diff options
Diffstat (limited to 'gcc/config/sparc/sparc.c')
| -rw-r--r-- | gcc/config/sparc/sparc.c | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c index 0b494bfe9bc..134dfd494fd 100644 --- a/gcc/config/sparc/sparc.c +++ b/gcc/config/sparc/sparc.c @@ -3381,10 +3381,13 @@ emit_cbcond_nop (rtx insn) /* Return nonzero if TRIAL can go into the call delay slot. */ int -tls_call_delay (rtx trial) +eligible_for_call_delay (rtx trial) { rtx pat; + if (get_attr_in_branch_delay (trial) == IN_BRANCH_DELAY_FALSE) + return 0; + /* Binutils allows call __tls_get_addr, %tgd_call (foo) add %l7, %o0, %o0, %tgd_add (foo) @@ -3466,11 +3469,7 @@ eligible_for_restore_insn (rtx trial, bool return_p) /* If we have the 'return' instruction, anything that does not use local or output registers and can go into a delay slot wins. */ - else if (return_p - && TARGET_V9 - && !epilogue_renumber (&pat, 1) - && get_attr_in_uncond_branch_delay (trial) - == IN_UNCOND_BRANCH_DELAY_TRUE) + else if (return_p && TARGET_V9 && !epilogue_renumber (&pat, 1)) return 1; /* The 'restore src1,src2,dest' pattern for SImode. */ @@ -3513,21 +3512,20 @@ eligible_for_return_delay (rtx trial) int regno; rtx pat; - if (! NONJUMP_INSN_P (trial)) - return 0; - - if (get_attr_length (trial) != 1) - return 0; - /* If the function uses __builtin_eh_return, the eh_return machinery occupies the delay slot. */ if (crtl->calls_eh_return) return 0; + if (get_attr_in_branch_delay (trial) == IN_BRANCH_DELAY_FALSE) + return 0; + /* In the case of a leaf or flat function, anything can go into the slot. */ if (sparc_leaf_function_p || TARGET_FLAT) - return - get_attr_in_uncond_branch_delay (trial) == IN_UNCOND_BRANCH_DELAY_TRUE; + return 1; + + if (!NONJUMP_INSN_P (trial)) + return 0; pat = PATTERN (trial); if (GET_CODE (pat) == PARALLEL) @@ -3547,9 +3545,7 @@ eligible_for_return_delay (rtx trial) if (regno >= 8 && regno < 24) return 0; } - return !epilogue_renumber (&pat, 1) - && (get_attr_in_uncond_branch_delay (trial) - == IN_UNCOND_BRANCH_DELAY_TRUE); + return !epilogue_renumber (&pat, 1); } if (GET_CODE (pat) != SET) @@ -3569,10 +3565,7 @@ eligible_for_return_delay (rtx trial) instruction, it can probably go in. But restore will not work with FP_REGS. */ if (! SPARC_INT_REG_P (regno)) - return (TARGET_V9 - && !epilogue_renumber (&pat, 1) - && get_attr_in_uncond_branch_delay (trial) - == IN_UNCOND_BRANCH_DELAY_TRUE); + return TARGET_V9 && !epilogue_renumber (&pat, 1); return eligible_for_restore_insn (trial, true); } @@ -3584,10 +3577,10 @@ eligible_for_sibcall_delay (rtx trial) { rtx pat; - if (! NONJUMP_INSN_P (trial) || GET_CODE (PATTERN (trial)) != SET) + if (get_attr_in_branch_delay (trial) == IN_BRANCH_DELAY_FALSE) return 0; - if (get_attr_length (trial) != 1) + if (!NONJUMP_INSN_P (trial)) return 0; pat = PATTERN (trial); @@ -3606,6 +3599,9 @@ eligible_for_sibcall_delay (rtx trial) return 1; } + if (GET_CODE (pat) != SET) + return 0; + /* Otherwise, only operations which can be done in tandem with a `restore' insn can go into the delay slot. */ if (GET_CODE (SET_DEST (pat)) != REG |