diff options
| author | Jiong Wang <jiong.wang@arm.com> | 2014-07-24 14:32:54 +0000 |
|---|---|---|
| committer | Marcus Shawcroft <mshawcroft@gcc.gnu.org> | 2014-07-24 14:32:54 +0000 |
| commit | 363ffa50f1394a6eaaa137f7c5e63084b9fd4226 (patch) | |
| tree | 782410cc95e4e2adb2f82a4eb489ea33471016d9 /gcc/config/aarch64 | |
| parent | 51705ec128f47bf0bc7615aa5b72445c45fd1657 (diff) | |
| download | gcc-363ffa50f1394a6eaaa137f7c5e63084b9fd4226.zip gcc-363ffa50f1394a6eaaa137f7c5e63084b9fd4226.tar.gz gcc-363ffa50f1394a6eaaa137f7c5e63084b9fd4226.tar.bz2 | |
[AArch64] Extend frame state to track WB candidates.
From-SVN: r212996
Diffstat (limited to 'gcc/config/aarch64')
| -rw-r--r-- | gcc/config/aarch64/aarch64.c | 14 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.h | 3 |
2 files changed, 17 insertions, 0 deletions
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c index 3457051..37fae93 100644 --- a/gcc/config/aarch64/aarch64.c +++ b/gcc/config/aarch64/aarch64.c @@ -1818,6 +1818,9 @@ aarch64_layout_frame (void) #define SLOT_NOT_REQUIRED (-2) #define SLOT_REQUIRED (-1) + cfun->machine->frame.wb_candidate1 = FIRST_PSEUDO_REGISTER; + cfun->machine->frame.wb_candidate2 = FIRST_PSEUDO_REGISTER; + /* First mark all the registers that really need to be saved... */ for (regno = R0_REGNUM; regno <= R30_REGNUM; regno++) cfun->machine->frame.reg_offset[regno] = SLOT_NOT_REQUIRED; @@ -1846,7 +1849,9 @@ aarch64_layout_frame (void) { /* FP and LR are placed in the linkage record. */ cfun->machine->frame.reg_offset[R29_REGNUM] = 0; + cfun->machine->frame.wb_candidate1 = R29_REGNUM; cfun->machine->frame.reg_offset[R30_REGNUM] = UNITS_PER_WORD; + cfun->machine->frame.wb_candidate2 = R30_REGNUM; cfun->machine->frame.hardfp_offset = 2 * UNITS_PER_WORD; offset += 2 * UNITS_PER_WORD; } @@ -1856,6 +1861,10 @@ aarch64_layout_frame (void) if (cfun->machine->frame.reg_offset[regno] == SLOT_REQUIRED) { cfun->machine->frame.reg_offset[regno] = offset; + if (cfun->machine->frame.wb_candidate1 == FIRST_PSEUDO_REGISTER) + cfun->machine->frame.wb_candidate1 = regno; + else if (cfun->machine->frame.wb_candidate2 == FIRST_PSEUDO_REGISTER) + cfun->machine->frame.wb_candidate2 = regno; offset += UNITS_PER_WORD; } @@ -1863,6 +1872,11 @@ aarch64_layout_frame (void) if (cfun->machine->frame.reg_offset[regno] == SLOT_REQUIRED) { cfun->machine->frame.reg_offset[regno] = offset; + if (cfun->machine->frame.wb_candidate1 == FIRST_PSEUDO_REGISTER) + cfun->machine->frame.wb_candidate1 = regno; + else if (cfun->machine->frame.wb_candidate2 == FIRST_PSEUDO_REGISTER + && cfun->machine->frame.wb_candidate1 >= V0_REGNUM) + cfun->machine->frame.wb_candidate2 = regno; offset += UNITS_PER_WORD; } diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h index 080b23f..db950da 100644 --- a/gcc/config/aarch64/aarch64.h +++ b/gcc/config/aarch64/aarch64.h @@ -542,6 +542,9 @@ struct GTY (()) aarch64_frame * frame (incomming SP) to the stack_pointer. This value is always * a multiple of STACK_BOUNDARY. */ + unsigned wb_candidate1; + unsigned wb_candidate2; + HOST_WIDE_INT frame_size; bool laid_out; |