maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Revert "[PGO][InstrProf] Do not promote count if the exit blocks contains ret instruction" 

This reverts commit 867ef4472d.
This commit is contained in:
Rong Xu 2020-07-24 17:33:49 -07:00
parent 867ef4472d
commit dcf1bca0de
2 changed files with 0 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
llvm/test/Transforms/PGOProfile/Inputs/fix_entry_count.proftext
View File

@ -1,8 +0,0 @@
:ir
:entry_first
test_simple_for
34137660316
2
0
96

34
llvm/test/Transforms/PGOProfile/fix_entry_count.ll
View File

@ -1,34 +0,0 @@
; RUN: llvm-profdata merge %S/Inputs/fix_entry_count.proftext -o %t.profdata
; RUN: opt < %s -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define i32 @test_simple_for(i32 %n) {
; USE: define i32 @test_simple_for(i32 %n)
; USE-SAME: !prof ![[ENTRY_COUNT:[0-9]*]]
entry:
br label %for.cond
for.cond:
%i = phi i32 [ 0, %entry ], [ %inc1, %for.inc ]
%sum = phi i32 [ 1, %entry ], [ %inc, %for.inc ]
%cmp = icmp slt i32 %i, %n
br i1 %cmp, label %for.body, label %for.end
; USE: br i1 %cmp, label %for.body, label %for.end
; USE-SAME: !prof ![[BW_FOR_COND:[0-9]+]]
for.body:
%inc = add nsw i32 %sum, 1
br label %for.inc
for.inc:
%inc1 = add nsw i32 %i, 1
br label %for.cond
for.end:
ret i32 %sum
}
; USE: ![[ENTRY_COUNT]] = !{!"function_entry_count", i64 1}
; USE: ![[BW_FOR_COND]] = !{!"branch_weights", i32 96, i32 1}