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| author | Michael Meissner <meissner@linux.ibm.com> | 2020-01-07 01:29:12 +0000 |
|---|---|---|
| committer | Michael Meissner <meissner@gcc.gnu.org> | 2020-01-07 01:29:12 +0000 |
| commit | dfef3500361057392f3c17e1f97883222347c0ef (patch) | |
| tree | d782b8feccc2ed88f557a605b8b722842eb92e46 /gcc | |
| parent | 665e3b214d89d7938a48f94e8e7fe71b749544b8 (diff) | |
| download | gcc-dfef3500361057392f3c17e1f97883222347c0ef.zip gcc-dfef3500361057392f3c17e1f97883222347c0ef.tar.gz gcc-dfef3500361057392f3c17e1f97883222347c0ef.tar.bz2 | |
Add support for large prefixed address in adjusting a vector address.
2020-01-06 Michael Meissner <meissner@linux.ibm.com>
* config/rs6000/rs6000.c (rs6000_adjust_vec_address): Add support
for the offset being 34-bits when -mcpu=future is used.
From-SVN: r279937
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 16 |
2 files changed, 20 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 1ba98e4..b2e6d85 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2020-01-06 Michael Meissner <meissner@linux.ibm.com> + + * config/rs6000/rs6000.c (rs6000_adjust_vec_address): Add support + for the offset being 34-bits when -mcpu=future is used. + 2020-01-06 John David Anglin <danglin@gcc.gnu.org> * config/pa/pa.md: Revert change to use ordered_comparison_operator diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 3011e2d..64b40a4 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -6797,11 +6797,19 @@ rs6000_adjust_vec_address (rtx scalar_reg, HOST_WIDE_INT offset = INTVAL (op1) + INTVAL (element_offset); rtx offset_rtx = GEN_INT (offset); - if (IN_RANGE (offset, -32768, 32767) + /* 16-bit offset. */ + if (SIGNED_INTEGER_16BIT_P (offset) && (scalar_size < 8 || (offset & 0x3) == 0)) new_addr = gen_rtx_PLUS (Pmode, op0, offset_rtx); + + /* 34-bit offset if we have prefixed addresses. */ + else if (TARGET_PREFIXED_ADDR && SIGNED_INTEGER_34BIT_P (offset)) + new_addr = gen_rtx_PLUS (Pmode, op0, offset_rtx); + else { + /* Offset overflowed, move offset to the temporary (which will + likely be split), and do X-FORM addressing. */ emit_move_insn (base_tmp, offset_rtx); new_addr = gen_rtx_PLUS (Pmode, op0, base_tmp); } @@ -6830,6 +6838,12 @@ rs6000_adjust_vec_address (rtx scalar_reg, emit_insn (insn); } + /* Make sure we don't overwrite the temporary if the element being + extracted is variable, and we've put the offset into base_tmp + previously. */ + else if (reg_mentioned_p (base_tmp, element_offset)) + emit_insn (gen_add2_insn (base_tmp, op1)); + else { emit_move_insn (base_tmp, op1); |