diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/reload1.c | 58 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr41295.c | 91 |
4 files changed, 138 insertions, 22 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 254de0b..2565cb9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2009-09-22 Alexandre Oliva <aoliva@redhat.com> + + PR debug/41295 + * reload1.c (reload): Reset debug insns with pseudos without + equivalences. + 2009-09-22 Neil Vachharajani <nvachhar@google.com> * testsuite/gcc.dg/pr40209.c: Add test case. diff --git a/gcc/reload1.c b/gcc/reload1.c index fae95d6..5581cd6 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -1241,40 +1241,54 @@ reload (rtx first, int global) { rtx reg = regno_reg_rtx[i]; rtx equiv = 0; - df_ref use; + df_ref use, next; if (reg_equiv_constant[i]) equiv = reg_equiv_constant[i]; else if (reg_equiv_invariant[i]) equiv = reg_equiv_invariant[i]; else if (reg && MEM_P (reg)) - { - equiv = targetm.delegitimize_address (reg); - if (equiv == reg) - equiv = 0; - } + equiv = targetm.delegitimize_address (reg); else if (reg && REG_P (reg) && (int)REGNO (reg) != i) equiv = reg; - if (equiv) - for (use = DF_REG_USE_CHAIN (i); use; - use = DF_REF_NEXT_REG (use)) - if (DEBUG_INSN_P (DF_REF_INSN (use))) + if (equiv == reg) + continue; + + for (use = DF_REG_USE_CHAIN (i); use; use = next) + { + rtx *loc = DF_REF_LOC (use); + rtx x = *loc; + + insn = DF_REF_INSN (use); + next = DF_REF_NEXT_REG (use); + + if (DEBUG_INSN_P (insn)) { - rtx *loc = DF_REF_LOC (use); - rtx x = *loc; - - if (x == reg) - *loc = copy_rtx (equiv); - else if (GET_CODE (x) == SUBREG - && SUBREG_REG (x) == reg) - *loc = simplify_gen_subreg (GET_MODE (x), equiv, - GET_MODE (reg), - SUBREG_BYTE (x)); + gcc_assert (x == reg + || (GET_CODE (x) == SUBREG + && SUBREG_REG (x) == reg)); + + if (!equiv) + { + INSN_VAR_LOCATION_LOC (insn) = gen_rtx_UNKNOWN_VAR_LOC (); + df_insn_rescan_debug_internal (insn); + } else - gcc_unreachable (); - *loc = wrap_constant (GET_MODE (x), *loc); + { + if (x == reg) + *loc = copy_rtx (equiv); + else if (GET_CODE (x) == SUBREG + && SUBREG_REG (x) == reg) + *loc = simplify_gen_subreg (GET_MODE (x), equiv, + GET_MODE (reg), + SUBREG_BYTE (x)); + else + gcc_unreachable (); + *loc = wrap_constant (GET_MODE (x), *loc); + } } + } } } diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e32300b..fd26fb24 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2009-09-22 Alexandre Oliva <aoliva@redhat.com> + + PR debug/41295 + * gcc.dg/pr41295.c: New. + 2009-09-22 Adam Nemet <anemet@caviumnetworks.com> * gcc.target/mips/code-readable-1.c: Change \. to \\. when diff --git a/gcc/testsuite/gcc.dg/pr41295.c b/gcc/testsuite/gcc.dg/pr41295.c new file mode 100644 index 0000000..fabff63 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr41295.c @@ -0,0 +1,91 @@ +/* { dg-do compile } */ +/* { dg-options "-O1 -g" } */ + +enum reg_class +{ + BASE_REGS, + GENERAL_REGS, + LIM_REG_CLASSES +}; + +static __inline__ unsigned char +hard_reg_set_subset_p (const unsigned long x[4], const unsigned long y[4]) +{ + return ((x[0] & ~y[0]) == 0 + && (x[1] & ~y[1]) == 0 + && (x[2] & ~y[2]) == 0 + && (x[3] & ~y[3]) == 0); +} + +static __inline__ unsigned char +hard_reg_set_equal_p (const unsigned long x[4], const unsigned long y[4]) +{ + return x[0] == y[0] + && x[1] == y[1] + && x[2] == y[2] + && x[3] == y[3]; +} + +extern unsigned long reg_class_contents[(int) LIM_REG_CLASSES][4]; +extern int ira_important_classes_num; +extern enum reg_class ira_important_classes[(int) LIM_REG_CLASSES]; +extern enum reg_class ira_reg_class_intersect[(int) LIM_REG_CLASSES][(int) + LIM_REG_CLASSES]; +extern unsigned char ira_reg_classes_intersect_p[(int) LIM_REG_CLASSES][(int) + LIM_REG_CLASSES]; +extern enum reg_class ira_reg_class_super_classes[(int) LIM_REG_CLASSES][(int) + LIM_REG_CLASSES]; +static unsigned long temp_hard_regset[4]; + +static void +setup_reg_class_relations (void) +{ + int i, cl1, cl2, cl3; + unsigned long temp_set2[4]; + for (cl1 = 0; cl1 < (int) LIM_REG_CLASSES; cl1++) + { + ira_reg_class_super_classes[cl1][0] = LIM_REG_CLASSES; + for (cl2 = 0; cl2 < (int) LIM_REG_CLASSES; cl2++) + { + ira_reg_classes_intersect_p[cl1][cl2] = 0; + { + unsigned long *scan_tp_ = (temp_set2), *scan_fp_ = + (reg_class_contents[cl2]); + scan_tp_[1] = scan_fp_[1]; + scan_tp_[2] = scan_fp_[2]; + scan_tp_[3] = scan_fp_[3]; + } + for (i = 0; i < ira_important_classes_num; i++) + { + cl3 = ira_important_classes[i]; + { + unsigned long *scan_tp_ = (temp_hard_regset), *scan_fp_ = + (reg_class_contents[cl3]); + scan_tp_[0] = scan_fp_[0]; + scan_tp_[1] = scan_fp_[1]; + scan_tp_[3] = scan_fp_[3]; + } + if (!hard_reg_set_subset_p (temp_hard_regset, temp_set2) + || (hard_reg_set_equal_p (temp_hard_regset, temp_set2) + && hard_reg_set_subset_p (reg_class_contents[cl3], + reg_class_contents[(int) + ira_reg_class_intersect + [cl1] + [cl2]]))) + ira_reg_class_intersect[cl1][cl2] = (enum reg_class) cl3; + } + } + } +} + +static void +find_reg_class_closure (void) +{ + setup_reg_class_relations (); +} + +void +ira_init (void) +{ + find_reg_class_closure (); +} |