diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0354-config-rs6000-rs6000.c-rs6000_register_move_cost-Mak.patch')
-rw-r--r-- | meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0354-config-rs6000-rs6000.c-rs6000_register_move_cost-Mak.patch | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0354-config-rs6000-rs6000.c-rs6000_register_move_cost-Mak.patch b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0354-config-rs6000-rs6000.c-rs6000_register_move_cost-Mak.patch new file mode 100644 index 0000000000..e5cfa1d72b --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-4.6.0/gcc-4_6-branch-backports/0354-config-rs6000-rs6000.c-rs6000_register_move_cost-Mak.patch | |||
@@ -0,0 +1,28 @@ | |||
1 | From d51320157aee7ce2a4e2478c8457eae2022192fb Mon Sep 17 00:00:00 2001 | ||
2 | From: pthaugen <pthaugen@138bc75d-0d04-0410-961f-82ee72b054a4> | ||
3 | Date: Thu, 26 May 2011 15:33:43 +0000 | ||
4 | Subject: [PATCH] * config/rs6000/rs6000.c (rs6000_register_move_cost): Make LR/CTR | ||
5 | moves expensive on Power7 also. | ||
6 | |||
7 | git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174294 138bc75d-0d04-0410-961f-82ee72b054a4 | ||
8 | |||
9 | index 898a87b..b39801a 100644 | ||
10 | --- a/gcc/config/rs6000/rs6000.c | ||
11 | +++ b/gcc/config/rs6000/rs6000.c | ||
12 | @@ -26670,9 +26670,10 @@ rs6000_register_move_cost (enum machine_mode mode, | ||
13 | else if (from == CR_REGS) | ||
14 | ret = 4; | ||
15 | |||
16 | - /* Power6 has slower LR/CTR moves so make them more expensive than | ||
17 | - memory in order to bias spills to memory .*/ | ||
18 | - else if (rs6000_cpu == PROCESSOR_POWER6 | ||
19 | + /* For those processors that have slow LR/CTR moves, make them more | ||
20 | + expensive than memory in order to bias spills to memory .*/ | ||
21 | + else if ((rs6000_cpu == PROCESSOR_POWER6 | ||
22 | + || rs6000_cpu == PROCESSOR_POWER7) | ||
23 | && reg_classes_intersect_p (from, LINK_OR_CTR_REGS)) | ||
24 | ret = 6 * hard_regno_nregs[0][mode]; | ||
25 | |||
26 | -- | ||
27 | 1.7.0.4 | ||
28 | |||