replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[PGO] Add a test for 2-deep loop nest 

llvm-svn: 307864
This commit is contained in:
Xinliang David Li 2017-07-12 23:28:45 +00:00
parent f564c6959e
commit 07df59b7b6
1 changed files with 51 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
compiler-rt/test/profile/Linux/counter_promo_nest.c Normal file
View File

@ -0,0 +1,51 @@
// RUN: rm -fr %t.promo.prof
// RUN: rm -fr %t.nopromo.prof
// RUN: %clang_pgogen=%t.promo.prof/ -o %t.promo.gen -O2 %s
// RUN: %clang_pgogen=%t.promo.prof/ -o %t.promo.gen.ll -emit-llvm -S -O2 %s
// RUN: cat %t.promo.gen.ll | FileCheck --check-prefix=PROMO %s
// RUN: %run %t.promo.gen
// RUN: llvm-profdata merge -o %t.promo.profdata %t.promo.prof/
// RUN: llvm-profdata show --counts --all-functions %t.promo.profdata > %t.promo.dump
// RUN: %clang_pgogen=%t.nopromo.prof/ -mllvm -do-counter-promotion=false -o %t.nopromo.gen -O2 %s
// RUN: %run %t.nopromo.gen
// RUN: llvm-profdata merge -o %t.nopromo.profdata %t.nopromo.prof/
// RUN: llvm-profdata show --counts --all-functions %t.nopromo.profdata > %t.nopromo.dump
// RUN: diff %t.promo.profdata %t.nopromo.profdata
int g;
__attribute__((noinline)) void bar() {
g++;
}
extern int printf(const char*,...);
int c = 10;
int main()
// PROMO-LABEL: @main
// PROMO: load{{.*}}@__profc_main{{.*}}
// PROMO-NEXT: add
// PROMO-NEXT: store{{.*}}@__profc_main{{.*}}
// PROMO-NEXT: load{{.*}}@__profc_main{{.*}}
// PROMO-NEXT: add
// PROMO-NEXT: store{{.*}}@__profc_main{{.*}}
// PROMO-NEXT: load{{.*}}@__profc_main{{.*}}
// PROMO-NEXT: add
// PROMO-NEXT: store{{.*}}@__profc_main{{.*}}
{
int i, j, k;
g = 0;
for (i = 0; i < c; i++)
for (j = 0; j < c; j++)
for (k = 0; k < c; k++)
bar();
for (i = 0; i < c; i++)
for (j = 0; j < 10*c;j++)
bar();
for (i = 0; i < 100*c; i++)
bar();
return 0;
}