diff options
| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-27 07:39:51 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-27 07:39:51 +0000 |
| commit | 0de07d5e3d74bf4f25e1704c56fa3677879d4aaf (patch) | |
| tree | d157958e0644d25a428b431b2445c8aaaff7b7bc /gcc/flow.c | |
| parent | faf1555d9a87696a484d7eec706c2529f7d81bf1 (diff) | |
| download | gcc-0de07d5e3d74bf4f25e1704c56fa3677879d4aaf.tar.gz | |
* flow.c (calculate_global_regs_live): Force stack pointer
live at end.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33476 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/flow.c')
| -rw-r--r-- | gcc/flow.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/flow.c b/gcc/flow.c index 5a729c77d7d..72a8372e05e 100644 --- a/gcc/flow.c +++ b/gcc/flow.c @@ -3050,6 +3050,10 @@ calculate_global_regs_live (blocks_in, blocks_out, flags) IOR_REG_SET (new_live_at_end, sb->global_live_at_start); } + /* Force the stack pointer to be live -- which might not already be + the case for blocks within infinite loops. */ + SET_REGNO_REG_SET (new_live_at_end, STACK_POINTER_REGNUM); + /* Regs used in phi nodes are not included in global_live_at_start, since they are live only along a particular edge. Set those regs that are live because of a |