mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-26 04:32:44 +01:00
6ef5900ddb
`__llvm_prf_vnodes` and `__llvm_prf_names` are used by runtime but not referenced via relocation in the translation unit. With `-z start-stop-gc` (LLD 13 (D96914); GNU ld 2.37 https://sourceware.org/bugzilla/show_bug.cgi?id=27451), the linker does not let `__start_/__stop_` references retain their sections. Place `__llvm_prf_vnodes` and `__llvm_prf_names` in `llvm.used` to make them retained by the linker. This patch changes most existing `UsedVars` cases to `CompilerUsedVars` to reflect the ideal state - if the binary format properly supports section based GC (dead stripping), `llvm.compiler.used` should be sufficient. `__llvm_prf_vnodes` and `__llvm_prf_names` are switched to `UsedVars` since we want them to be unconditionally retained by both compiler and linker. Behaviors on COFF/Mach-O are not affected. Reviewed By: davidxl Differential Revision: https://reviews.llvm.org/D97649
66 lines
3.7 KiB
LLVM
66 lines
3.7 KiB
LLVM
;; Check that static counters are allocated for value profiler
|
|
|
|
; RUN: opt < %s -mtriple=x86_64-apple-macosx10.10.0 -vp-static-alloc=true -instrprof -S | FileCheck %s --check-prefix=STATIC
|
|
; RUN: opt < %s -mtriple=x86_64-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC
|
|
; RUN: opt < %s -mtriple=powerpc-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC
|
|
; RUN: opt < %s -mtriple=sparc-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC
|
|
; RUN: opt < %s -mtriple=s390x-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC-EXT
|
|
; RUN: opt < %s -mtriple=powerpc64-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC-EXT
|
|
; RUN: opt < %s -mtriple=sparc64-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC-EXT
|
|
; RUN: opt < %s -mtriple=mips-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC-SEXT
|
|
; RUN: opt < %s -mtriple=mips64-unknown-linux -instrprof -vp-static-alloc=true -S | FileCheck %s --check-prefix=STATIC-SEXT
|
|
; RUN: opt < %s -mtriple=x86_64-apple-macosx10.10.0 -vp-static-alloc=false -instrprof -S | FileCheck %s --check-prefix=DYN
|
|
; RUN: opt < %s -mtriple=x86_64-unknown-linux -instrprof -vp-static-alloc=false -S | FileCheck %s --check-prefix=DYN
|
|
|
|
|
|
@__profn_foo = private constant [3 x i8] c"foo"
|
|
@__profn_bar = private constant [3 x i8] c"bar"
|
|
|
|
define i32 @foo(i32 ()* ) {
|
|
call void @llvm.instrprof.increment(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_foo, i32 0, i32 0), i64 12884901887, i32 1, i32 0)
|
|
%2 = ptrtoint i32 ()* %0 to i64
|
|
call void @llvm.instrprof.value.profile(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_foo, i32 0, i32 0), i64 12884901887, i64 %2, i32 0, i32 0)
|
|
%3 = tail call i32 %0()
|
|
ret i32 %3
|
|
}
|
|
|
|
$bar = comdat any
|
|
|
|
define i32 @bar(i32 ()* ) comdat {
|
|
entry:
|
|
call void @llvm.instrprof.increment(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_bar, i32 0, i32 0), i64 12884901887, i32 1, i32 0)
|
|
%1 = ptrtoint i32 ()* %0 to i64
|
|
call void @llvm.instrprof.value.profile(i8* getelementptr inbounds ([3 x i8], [3 x i8]* @__profn_bar, i32 0, i32 0), i64 12884901887, i64 %1, i32 0, i32 0)
|
|
%2 = tail call i32 %0()
|
|
ret i32 %2
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
declare void @llvm.instrprof.increment(i8*, i64, i32, i32) #0
|
|
|
|
; Function Attrs: nounwind
|
|
declare void @llvm.instrprof.value.profile(i8*, i64, i64, i32, i32) #0
|
|
|
|
attributes #0 = { nounwind }
|
|
|
|
; STATIC: @__profvp_foo = private global [1 x i64] zeroinitializer, section "{{[^"]+}}"
|
|
; STATIC: @__profvp_bar = private global [1 x i64] zeroinitializer, section "{{[^"]+}}", comdat($__profd_bar)
|
|
; STATIC: @__llvm_prf_vnodes
|
|
|
|
; DYN-NOT: @__profvp_foo
|
|
; DYN-NOT: @__llvm_prf_vnodes
|
|
|
|
;; __llvm_prf_vnodes and __llvm_prf_nm are not referenced by other metadata sections.
|
|
;; We have to conservatively place them in llvm.used.
|
|
; STATIC: @llvm.used = appending global
|
|
; STATIC-SAME: @__llvm_prf_vnodes
|
|
; STATIC-SAME: @__llvm_prf_nm
|
|
|
|
; STATIC: call void @__llvm_profile_instrument_target(i64 %3, i8* bitcast ({ i64, i64, i64*, i8*, i8*, i32, [2 x i16] }* @__profd_foo to i8*), i32 0)
|
|
; STATIC-EXT: call void @__llvm_profile_instrument_target(i64 %3, i8* bitcast ({ i64, i64, i64*, i8*, i8*, i32, [2 x i16] }* @__profd_foo to i8*), i32 zeroext 0)
|
|
; STATIC-SEXT: call void @__llvm_profile_instrument_target(i64 %3, i8* bitcast ({ i64, i64, i64*, i8*, i8*, i32, [2 x i16] }* @__profd_foo to i8*), i32 signext 0)
|
|
|
|
; STATIC: declare void @__llvm_profile_instrument_target(i64, i8*, i32)
|
|
; STATIC-EXT: declare void @__llvm_profile_instrument_target(i64, i8*, i32 zeroext)
|
|
; STATIC-SEXT: declare void @__llvm_profile_instrument_target(i64, i8*, i32 signext)
|