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[CGProfile] don't emit cgprofile entry if called function is dllimport 

Differential Revision: https://reviews.llvm.org/D88127
This commit is contained in:
Zequan Wu 2020-09-22 18:10:26 -07:00
parent 2bd5e3fb3c
commit f5435399e8
2 changed files with 5 additions and 2 deletions
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3
llvm/lib/Transforms/Instrumentation/CGProfile.cpp
View File

@ -53,7 +53,8 @@ static bool runCGProfilePass(
InstrProfSymtab Symtab;
auto UpdateCounts = [&](TargetTransformInfo &TTI, Function *F,
Function *CalledF, uint64_t NewCount) {
if (!CalledF || !TTI.isLoweredToCall(CalledF))
if (!CalledF || !TTI.isLoweredToCall(CalledF) ||
CalledF->hasDLLImportStorageClass())
return;
uint64_t &Count = Counts[std::make_pair(F, CalledF)];
Count = SaturatingAdd(Count, NewCount);

4
llvm/test/Instrumentation/cgprofile.ll
View File

@ -13,6 +13,7 @@ declare i32 @func1()
declare i32 @func2()
declare i32 @func3()
declare i32 @func4()
declare dllimport i32 @func5()
define void @freq(i1 %cond) !prof !1 {
%tmp = load i32 ()*, i32 ()** @foo, align 8
@ -28,7 +29,7 @@ B:
!1 = !{!"function_entry_count", i64 32}
!2 = !{!"branch_weights", i32 5, i32 10}
!3 = !{!"VP", i32 0, i64 1600, i64 7651369219802541373, i64 1030, i64 -4377547752858689819, i64 410, i64 -6929281286627296573, i64 150, i64 -2545542355363006406, i64 10}
!3 = !{!"VP", i32 0, i64 1600, i64 7651369219802541373, i64 1030, i64 -4377547752858689819, i64 410, i64 -6929281286627296573, i64 150, i64 -2545542355363006406, i64 10, i64 3667884930908592509, i64 0}
; CHECK: !llvm.module.flags = !{![[cgprof:[0-9]+]]}
; CHECK: ![[cgprof]] = !{i32 5, !"CG Profile", ![[prof:[0-9]+]]}
@ -40,3 +41,4 @@ B:
; CHECK: ![[e4]] = !{void (i1)* @freq, i32 ()* @func1, i64 10}
; CHECK: ![[e5]] = !{void (i1)* @freq, void ()* @a, i64 11}
; CHECK: ![[e6]] = !{void (i1)* @freq, void ()* @b, i64 21}
; CHECK-NOT: !{void (i1)* @freq, void ()* @func5, i64 0}