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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/final.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e83b0ce..108bc5f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2014-06-20 Tom de Vries <tom@codesourcery.com> + * final.c (collect_fn_hard_reg_usage): Don't save function_used_regs if + it contains all call_used_regs. + +2014-06-20 Tom de Vries <tom@codesourcery.com> + * final.c (collect_fn_hard_reg_usage): Add and use variable function_used_regs. diff --git a/gcc/final.c b/gcc/final.c index e39930d..e67e84b 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -4795,6 +4795,11 @@ collect_fn_hard_reg_usage (void) SET_HARD_REG_BIT (function_used_regs, i); #endif + /* The information we have gathered is only interesting if it exposes a + register from the call_used_regs that is not used in this function. */ + if (hard_reg_set_subset_p (call_used_reg_set, function_used_regs)) + return; + node = cgraph_rtl_info (current_function_decl); gcc_assert (node != NULL); |