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llvm-mirror/test/Transforms/PGOProfile/comdat_internal.ll
Rong Xu 1c42246e4b [PGO] Don't group COMDAT variables for compiler generated profile variables in ELF
With this patch, compiler generated profile variables will have its own COMDAT
name for ELF format, which syncs the behavior with COFF. Tested with clang
PGO bootstrap. This shows a modest reduction in object sizes in ELF format.

Differential Revision: https://reviews.llvm.org/D68041

llvm-svn: 373241
2019-09-30 18:11:22 +00:00

26 lines
1.1 KiB
LLVM

; RUN: opt < %s -pgo-instr-gen -instrprof -S | FileCheck %s
; RUN: opt < %s -passes=pgo-instr-gen,instrprof -S | FileCheck %s
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"
$foo = comdat any
; CHECK: $foo = comdat any
; CHECK: $__llvm_profile_raw_version = comdat any
@bar = global i32 ()* @foo, align 8
; CHECK: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
; CHECK-NOT: __profn__stdin__foo
; CHECK: @__profc__stdin__foo.[[FOO_HASH:[0-9]+]] = private global [1 x i64] zeroinitializer, section "__llvm_prf_cnts", comdat, align 8
; CHECK: @__profd__stdin__foo.[[FOO_HASH]] = private global { i64, i64, i64*, i8*, i8*, i32, [2 x i16] } { i64 -5640069336071256030, i64 [[FOO_HASH]], i64* getelementptr inbounds ([1 x i64], [1 x i64]* @__profc__stdin__foo.[[FOO_HASH]], i32 0, i32 0), i8* null
; CHECK-NOT: bitcast (i32 ()* @foo to i8*)
; CHECK-SAME: , i8* null, i32 1, [2 x i16] zeroinitializer }, section "__llvm_prf_data", comdat, align 8
; CHECK: @__llvm_prf_nm
; CHECK: @llvm.used
define internal i32 @foo() comdat {
entry:
ret i32 1
}