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* [gcc(refs/users/kubaneko/heads/histogram)] some minor divise fixes
@ 2023-03-15 8:16 Ondrej Kubanek
0 siblings, 0 replies; only message in thread
From: Ondrej Kubanek @ 2023-03-15 8:16 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:9d883347fd7f4433965b7b2384b453bdb17a0f5a
commit 9d883347fd7f4433965b7b2384b453bdb17a0f5a
Author: kubaneko <kubanek0ondrej@gmail.com>
Date: Wed Mar 15 08:16:04 2023 +0000
some minor divise fixes
Diff:
---
gcc/cfgloop.cc | 14 +++++---------
1 file changed, 5 insertions(+), 9 deletions(-)
diff --git a/gcc/cfgloop.cc b/gcc/cfgloop.cc
index d23ee01bea7..6b4412568d1 100644
--- a/gcc/cfgloop.cc
+++ b/gcc/cfgloop.cc
@@ -2249,7 +2249,6 @@ void histogram_counters_div_upper_bound (histogram_counters* hist_c, unsigned in
auto hist=*(hist_c->hist);
unsigned int lin_size=param_profile_histogram_size_lin;
unsigned int tot_size=param_profile_histogram_size;
- gcov_type_unsigned log_div=floor_log2(divisor);
unsigned int i=1;
for(; i<lin_size-1 && i<tot_size-1; i++){
hist[i/divisor]+=hist[i];
@@ -2257,13 +2256,10 @@ void histogram_counters_div_upper_bound (histogram_counters* hist_c, unsigned in
}
for (;i<tot_size-1;i++){
- gcov_type_unsigned upper_diff=((1<<(ceil_log2(lin_size)+i-lin_size))-1)/divisor;
- if (upper_diff<lin_size-1 && lin_size>1){
- hist[upper_diff==0 ? 1 : upper_diff]+=hist[i];
- hist[i]=0;
- } else {
- hist[i-log_div>0?i-log_div : 1]+=hist[i];
- hist[i]=0;
- }
+ gcov_type_unsigned upper_pow2=((gcov_type_unsigned)1)<<(ceil_log2(lin_size)+i+1-lin_size);
+ gcov_type_unsigned half=(upper_pow2>>2)+(upper_pow2>>1);
+ unsigned int ind=hist_index(half/divisor);
+ hist[ind]+=hist[i];
+ hist[i]=0;
}
}
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