diff options
| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-10-24 18:55:12 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-10-24 18:55:12 +0000 |
| commit | 2c1b58db6238df57f8532fc6eb7ac1149dfac706 (patch) | |
| tree | 79a4c847d9fe83459e20ee3e311470c35ffa772b | |
| parent | ff2499891cf154e140f0da2faedb445c585a4142 (diff) | |
| download | gcc-2c1b58db6238df57f8532fc6eb7ac1149dfac706.tar.gz | |
* tree-ssa-loop-ivopts.c (multiplier_allowed_in_address_p ): Check both
[reg+mult*reg] and [mult*reg] to determine if multiplier is allowed.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204031 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-loop-ivopts.c | 11 |
2 files changed, 12 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 4731f1c77e9..1b3b1ea9aae 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2013-10-24 Igor Shevlyakov <igor.shevlyakov@gmail.com> + + * tree-ssa-loop-ivopts.c (multiplier_allowed_in_address_p ): Check both + [reg+mult*reg] and [mult*reg] to determine if multiplier is allowed. + 2013-10-24 Cong Hou <congh@google.com> * convert.c (convert_to_real): Guard those unsafe math function diff --git a/gcc/tree-ssa-loop-ivopts.c b/gcc/tree-ssa-loop-ivopts.c index fd740160eab..bd2e6297785 100644 --- a/gcc/tree-ssa-loop-ivopts.c +++ b/gcc/tree-ssa-loop-ivopts.c @@ -3120,16 +3120,19 @@ multiplier_allowed_in_address_p (HOST_WIDE_INT ratio, enum machine_mode mode, { enum machine_mode address_mode = targetm.addr_space.address_mode (as); rtx reg1 = gen_raw_REG (address_mode, LAST_VIRTUAL_REGISTER + 1); - rtx addr; + rtx reg2 = gen_raw_REG (address_mode, LAST_VIRTUAL_REGISTER + 2); + rtx addr, scaled; HOST_WIDE_INT i; valid_mult = sbitmap_alloc (2 * MAX_RATIO + 1); bitmap_clear (valid_mult); - addr = gen_rtx_fmt_ee (MULT, address_mode, reg1, NULL_RTX); + scaled = gen_rtx_fmt_ee (MULT, address_mode, reg1, NULL_RTX); + addr = gen_rtx_fmt_ee (PLUS, address_mode, scaled, reg2); for (i = -MAX_RATIO; i <= MAX_RATIO; i++) { - XEXP (addr, 1) = gen_int_mode (i, address_mode); - if (memory_address_addr_space_p (mode, addr, as)) + XEXP (scaled, 1) = gen_int_mode (i, address_mode); + if (memory_address_addr_space_p (mode, addr, as) + || memory_address_addr_space_p (mode, scaled, as)) bitmap_set_bit (valid_mult, i + MAX_RATIO); } |