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 @@ +From d51320157aee7ce2a4e2478c8457eae2022192fb Mon Sep 17 00:00:00 2001 +From: pthaugen <pthaugen@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Thu, 26 May 2011 15:33:43 +0000 +Subject: [PATCH] * config/rs6000/rs6000.c (rs6000_register_move_cost): Make LR/CTR + moves expensive on Power7 also. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174294 138bc75d-0d04-0410-961f-82ee72b054a4 + +index 898a87b..b39801a 100644 +--- a/gcc/config/rs6000/rs6000.c ++++ b/gcc/config/rs6000/rs6000.c +@@ -26670,9 +26670,10 @@ rs6000_register_move_cost (enum machine_mode mode, + else if (from == CR_REGS) + ret = 4; + +- /* Power6 has slower LR/CTR moves so make them more expensive than +- memory in order to bias spills to memory .*/ +- else if (rs6000_cpu == PROCESSOR_POWER6 ++ /* For those processors that have slow LR/CTR moves, make them more ++ expensive than memory in order to bias spills to memory .*/ ++ else if ((rs6000_cpu == PROCESSOR_POWER6 ++ || rs6000_cpu == PROCESSOR_POWER7) + && reg_classes_intersect_p (from, LINK_OR_CTR_REGS)) + ret = 6 * hard_regno_nregs[0][mode]; + +-- +1.7.0.4 + |