[llvm] 0487728 - [PGO] Make emitted symbols hidden
Alex Brachet via llvm-commits
llvm-commits at lists.llvm.org
Mon Oct 24 12:05:44 PDT 2022
Author: Alex Brachet
Date: 2022-10-24T19:05:10Z
New Revision: 04877284b4592e9286cab43467662c1b4ff81861
URL: https://github.com/llvm/llvm-project/commit/04877284b4592e9286cab43467662c1b4ff81861
DIFF: https://github.com/llvm/llvm-project/commit/04877284b4592e9286cab43467662c1b4ff81861.diff
LOG: [PGO] Make emitted symbols hidden
This was reverted because it was breaking when targeting Darwin which
tried to export these symbols which are now hidden. It should be safe
to just stop attempting to export these symbols in the clang driver,
though Apple folks will need to change their TAPI allow list described
in the commit where these symbols were originally exported
https://github.com/llvm/llvm-project/commit/f5380185623be243ba0f1b18d4bd594ac5cc7163
Bug: https://github.com/llvm/llvm-project/issues/58265
Differential Revision: https://reviews.llvm.org/D135340
Added:
Modified:
clang/lib/Driver/ToolChains/Darwin.cpp
clang/test/Driver/darwin-ld.c
compiler-rt/lib/profile/InstrProfilingNameVar.c
compiler-rt/lib/profile/InstrProfilingVersionVar.c
llvm/lib/ProfileData/InstrProf.cpp
llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
llvm/test/Transforms/PGOProfile/branch1.ll
llvm/test/Transforms/PGOProfile/branch2.ll
llvm/test/Transforms/PGOProfile/comdat_internal.ll
llvm/test/Transforms/PGOProfile/criticaledge.ll
llvm/test/Transforms/PGOProfile/instr_entry_bb.ll
llvm/test/Transforms/PGOProfile/landingpad.ll
llvm/test/Transforms/PGOProfile/loop1.ll
llvm/test/Transforms/PGOProfile/loop2.ll
llvm/test/Transforms/PGOProfile/lto_cspgo_gen.ll
llvm/test/Transforms/PGOProfile/single_bb.ll
llvm/test/Transforms/PGOProfile/switch.ll
llvm/test/Transforms/PGOProfile/thinlto_cspgo_gen.ll
Removed:
################################################################################
diff --git a/clang/lib/Driver/ToolChains/Darwin.cpp b/clang/lib/Driver/ToolChains/Darwin.cpp
index 1a02d3cfbac7c..39f459e9ef652 100644
--- a/clang/lib/Driver/ToolChains/Darwin.cpp
+++ b/clang/lib/Driver/ToolChains/Darwin.cpp
@@ -1353,16 +1353,11 @@ void Darwin::addProfileRTLibs(const ArgList &Args,
// If we have a symbol export directive and we're linking in the profile
// runtime, automatically export symbols necessary to implement some of the
// runtime's functionality.
- if (hasExportSymbolDirective(Args)) {
- if (ForGCOV) {
- addExportedSymbol(CmdArgs, "___gcov_dump");
- addExportedSymbol(CmdArgs, "___gcov_reset");
- addExportedSymbol(CmdArgs, "_writeout_fn_list");
- addExportedSymbol(CmdArgs, "_reset_fn_list");
- } else {
- addExportedSymbol(CmdArgs, "___llvm_profile_filename");
- addExportedSymbol(CmdArgs, "___llvm_profile_raw_version");
- }
+ if (hasExportSymbolDirective(Args) && ForGCOV) {
+ addExportedSymbol(CmdArgs, "___gcov_dump");
+ addExportedSymbol(CmdArgs, "___gcov_reset");
+ addExportedSymbol(CmdArgs, "_writeout_fn_list");
+ addExportedSymbol(CmdArgs, "_reset_fn_list");
}
// Align __llvm_prf_{cnts,data} sections to the maximum expected page
diff --git a/clang/test/Driver/darwin-ld.c b/clang/test/Driver/darwin-ld.c
index 5be119a545a63..13ec69b2db1ab 100644
--- a/clang/test/Driver/darwin-ld.c
+++ b/clang/test/Driver/darwin-ld.c
@@ -338,18 +338,6 @@
// RUN: FileCheck -check-prefix=PROFILE_SECTALIGN %s < %t.log
// PROFILE_SECTALIGN: "-sectalign" "__DATA" "__llvm_prf_cnts" "0x4000" "-sectalign" "__DATA" "__llvm_prf_data" "0x4000"
-// RUN: %clang -target x86_64-apple-darwin12 -fprofile-instr-generate -exported_symbols_list /dev/null -### %t.o 2> %t.log
-// RUN: FileCheck -check-prefix=PROFILE_EXPORT %s < %t.log
-// RUN: %clang -target x86_64-apple-darwin12 -fprofile-instr-generate -Wl,-exported_symbols_list,/dev/null -### %t.o 2> %t.log
-// RUN: FileCheck -check-prefix=PROFILE_EXPORT %s < %t.log
-// RUN: %clang -target x86_64-apple-darwin12 -fprofile-instr-generate -Wl,-exported_symbol,foo -### %t.o 2> %t.log
-// RUN: FileCheck -check-prefix=PROFILE_EXPORT %s < %t.log
-// RUN: %clang -target x86_64-apple-darwin12 -fprofile-instr-generate -Xlinker -exported_symbol -Xlinker foo -### %t.o 2> %t.log
-// RUN: FileCheck -check-prefix=PROFILE_EXPORT %s < %t.log
-// RUN: %clang -target x86_64-apple-darwin12 -fprofile-instr-generate -Xlinker -exported_symbols_list -Xlinker /dev/null -### %t.o 2> %t.log
-// RUN: FileCheck -check-prefix=PROFILE_EXPORT %s < %t.log
-// PROFILE_EXPORT: "-exported_symbol" "___llvm_profile_filename" "-exported_symbol" "___llvm_profile_raw_version"
-//
// RUN: %clang -target x86_64-apple-darwin12 -fprofile-instr-generate --coverage -### %t.o 2> %t.log
// RUN: FileCheck -check-prefix=NO_PROFILE_EXPORT %s < %t.log
// NO_PROFILE_EXPORT-NOT: "-exported_symbol"
diff --git a/compiler-rt/lib/profile/InstrProfilingNameVar.c b/compiler-rt/lib/profile/InstrProfilingNameVar.c
index 2d67a55b985cf..407272806ba3c 100644
--- a/compiler-rt/lib/profile/InstrProfilingNameVar.c
+++ b/compiler-rt/lib/profile/InstrProfilingNameVar.c
@@ -14,4 +14,4 @@
* user has not specified one. Set this up by moving the runtime's copy of this
* symbol to an object file within the archive.
*/
-COMPILER_RT_WEAK char INSTR_PROF_PROFILE_NAME_VAR[1] = {0};
+COMPILER_RT_WEAK COMPILER_RT_VISIBILITY char INSTR_PROF_PROFILE_NAME_VAR[1] = {0};
diff --git a/compiler-rt/lib/profile/InstrProfilingVersionVar.c b/compiler-rt/lib/profile/InstrProfilingVersionVar.c
index e49d171cce410..21400bfb2caa0 100644
--- a/compiler-rt/lib/profile/InstrProfilingVersionVar.c
+++ b/compiler-rt/lib/profile/InstrProfilingVersionVar.c
@@ -13,14 +13,6 @@
* The runtime should only provide its own definition of this symbol when the
* user has not specified one. Set this up by moving the runtime's copy of this
* symbol to an object file within the archive.
- *
- * Hide this symbol everywhere except Apple platforms, where its presence is
- * checked by the TAPI tool.
*/
-#if !defined(__APPLE__)
-#define VERSION_VAR_VISIBILITY COMPILER_RT_VISIBILITY
-#else
-#define VERSION_VAR_VISIBILITY
-#endif
-VERSION_VAR_VISIBILITY COMPILER_RT_WEAK uint64_t INSTR_PROF_RAW_VERSION_VAR =
+COMPILER_RT_VISIBILITY COMPILER_RT_WEAK uint64_t INSTR_PROF_RAW_VERSION_VAR =
INSTR_PROF_RAW_VERSION;
diff --git a/llvm/lib/ProfileData/InstrProf.cpp b/llvm/lib/ProfileData/InstrProf.cpp
index 9c04bcb8416f5..eab1eab82ac2f 100644
--- a/llvm/lib/ProfileData/InstrProf.cpp
+++ b/llvm/lib/ProfileData/InstrProf.cpp
@@ -1210,6 +1210,7 @@ void createProfileFileNameVar(Module &M, StringRef InstrProfileOutput) {
GlobalVariable *ProfileNameVar = new GlobalVariable(
M, ProfileNameConst->getType(), true, GlobalValue::WeakAnyLinkage,
ProfileNameConst, INSTR_PROF_QUOTE(INSTR_PROF_PROFILE_NAME_VAR));
+ ProfileNameVar->setVisibility(GlobalValue::HiddenVisibility);
Triple TT(M.getTargetTriple());
if (TT.supportsCOMDAT()) {
ProfileNameVar->setLinkage(GlobalValue::ExternalLinkage);
diff --git a/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp b/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
index 1afb4b60a460e..d627c3eb5d803 100644
--- a/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
+++ b/llvm/lib/Transforms/Instrumentation/PGOInstrumentation.cpp
@@ -380,7 +380,7 @@ static GlobalVariable *createIRLevelProfileFlagVar(Module &M, bool IsCS) {
auto IRLevelVersionVariable = new GlobalVariable(
M, IntTy64, true, GlobalValue::WeakAnyLinkage,
Constant::getIntegerValue(IntTy64, APInt(64, ProfileVersion)), VarName);
- IRLevelVersionVariable->setVisibility(GlobalValue::DefaultVisibility);
+ IRLevelVersionVariable->setVisibility(GlobalValue::HiddenVisibility);
Triple TT(M.getTargetTriple());
if (TT.supportsCOMDAT()) {
IRLevelVersionVariable->setLinkage(GlobalValue::ExternalLinkage);
diff --git a/llvm/test/Transforms/PGOProfile/branch1.ll b/llvm/test/Transforms/PGOProfile/branch1.ll
index 7ec23d08ea5eb..22c4fd5d3c10f 100644
--- a/llvm/test/Transforms/PGOProfile/branch1.ll
+++ b/llvm/test/Transforms/PGOProfile/branch1.ll
@@ -14,7 +14,7 @@ target triple = "x86_64-unknown-linux-gnu"
; GEN-DARWIN-LINKONCE: target triple = "x86_64-apple-darwin"
; GEN-COMDAT: $__llvm_profile_raw_version = comdat any
-; GEN-COMDAT: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN-COMDAT: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN-LINKONCE: @__llvm_profile_raw_version = linkonce constant i64 {{[0-9]+}}
; GEN: @__profn_test_br_1 = private constant [9 x i8] c"test_br_1"
diff --git a/llvm/test/Transforms/PGOProfile/branch2.ll b/llvm/test/Transforms/PGOProfile/branch2.ll
index b65020d1557bf..82478e75cb262 100644
--- a/llvm/test/Transforms/PGOProfile/branch2.ll
+++ b/llvm/test/Transforms/PGOProfile/branch2.ll
@@ -9,7 +9,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_test_br_2 = private constant [9 x i8] c"test_br_2"
define i32 @test_br_2(i32 %i) {
diff --git a/llvm/test/Transforms/PGOProfile/comdat_internal.ll b/llvm/test/Transforms/PGOProfile/comdat_internal.ll
index 64274a33999df..a1cf115f910ad 100644
--- a/llvm/test/Transforms/PGOProfile/comdat_internal.ll
+++ b/llvm/test/Transforms/PGOProfile/comdat_internal.ll
@@ -10,7 +10,7 @@ $foo = comdat any
@bar = global ptr @foo, align 8
-; CHECK: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; CHECK: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; CHECK-NOT: __profn__stdin__foo
; CHECK: @__profc__stdin__foo.[[#FOO_HASH]] = private global [1 x i64] zeroinitializer, section "__llvm_prf_cnts", comdat, align 8
; CHECK: @__profd__stdin__foo.[[#FOO_HASH]] = private global { i64, i64, i64, ptr, ptr, i32, [2 x i16] } { i64 -5640069336071256030, i64 [[#FOO_HASH]], i64 sub (i64 ptrtoint (ptr @__profc__stdin__foo.742261418966908927 to i64), i64 ptrtoint (ptr @__profd__stdin__foo.742261418966908927 to i64)), ptr null
diff --git a/llvm/test/Transforms/PGOProfile/criticaledge.ll b/llvm/test/Transforms/PGOProfile/criticaledge.ll
index 4264b03c23d12..616d0fa3a4cf2 100644
--- a/llvm/test/Transforms/PGOProfile/criticaledge.ll
+++ b/llvm/test/Transforms/PGOProfile/criticaledge.ll
@@ -9,7 +9,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_test_criticalEdge = private constant [17 x i8] c"test_criticalEdge"
; GEN: @__profn__stdin__bar = private constant [11 x i8] c"<stdin>:bar"
diff --git a/llvm/test/Transforms/PGOProfile/instr_entry_bb.ll b/llvm/test/Transforms/PGOProfile/instr_entry_bb.ll
index e1380a0edf0e1..ee088674e35e2 100644
--- a/llvm/test/Transforms/PGOProfile/instr_entry_bb.ll
+++ b/llvm/test/Transforms/PGOProfile/instr_entry_bb.ll
@@ -7,7 +7,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_test_br_2 = private constant [9 x i8] c"test_br_2"
define i32 @test_br_2(i32 %i) {
diff --git a/llvm/test/Transforms/PGOProfile/landingpad.ll b/llvm/test/Transforms/PGOProfile/landingpad.ll
index 1b2648fc2ff64..e16bad5122778 100644
--- a/llvm/test/Transforms/PGOProfile/landingpad.ll
+++ b/llvm/test/Transforms/PGOProfile/landingpad.ll
@@ -11,7 +11,7 @@ target triple = "x86_64-unknown-linux-gnu"
@val = global i32 0, align 4
@_ZTIi = external constant ptr
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_bar = private constant [3 x i8] c"bar"
; GEN: @__profn_foo = private constant [3 x i8] c"foo"
diff --git a/llvm/test/Transforms/PGOProfile/loop1.ll b/llvm/test/Transforms/PGOProfile/loop1.ll
index 86029663bf8e1..ece7ea21b8ee5 100644
--- a/llvm/test/Transforms/PGOProfile/loop1.ll
+++ b/llvm/test/Transforms/PGOProfile/loop1.ll
@@ -9,7 +9,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_test_simple_for = private constant [15 x i8] c"test_simple_for"
define i32 @test_simple_for(i32 %n) {
diff --git a/llvm/test/Transforms/PGOProfile/loop2.ll b/llvm/test/Transforms/PGOProfile/loop2.ll
index 13725ec097546..071f8a6d5ad59 100644
--- a/llvm/test/Transforms/PGOProfile/loop2.ll
+++ b/llvm/test/Transforms/PGOProfile/loop2.ll
@@ -8,7 +8,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_test_nested_for = private constant [15 x i8] c"test_nested_for"
define i32 @test_nested_for(i32 %r, i32 %s) {
diff --git a/llvm/test/Transforms/PGOProfile/lto_cspgo_gen.ll b/llvm/test/Transforms/PGOProfile/lto_cspgo_gen.ll
index 8ea2d3ccbfe07..19f68bf30c809 100644
--- a/llvm/test/Transforms/PGOProfile/lto_cspgo_gen.ll
+++ b/llvm/test/Transforms/PGOProfile/lto_cspgo_gen.ll
@@ -11,11 +11,11 @@
; RUN: llvm-dis %t.0.0.preopt.bc -o - | FileCheck %s --check-prefix=IRPGOBE
;; Before LTO, we should have the __llvm_profile_raw_version definition.
-; IRPGOPRE: @__llvm_profile_raw_version = constant i64
+; IRPGOPRE: @__llvm_profile_raw_version = hidden constant i64
;; Non-prevailing __llvm_profile_raw_version is discarded by LTO. Ensure the
;; declaration is retained.
-; IRPGOBE: @__llvm_profile_raw_version = external constant i64
+; IRPGOBE: @__llvm_profile_raw_version = external hidden constant i64
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"
diff --git a/llvm/test/Transforms/PGOProfile/single_bb.ll b/llvm/test/Transforms/PGOProfile/single_bb.ll
index f60cbfe565e19..b6d85ed084018 100644
--- a/llvm/test/Transforms/PGOProfile/single_bb.ll
+++ b/llvm/test/Transforms/PGOProfile/single_bb.ll
@@ -3,7 +3,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_single_bb = private constant [9 x i8] c"single_bb"
define i32 @single_bb() {
diff --git a/llvm/test/Transforms/PGOProfile/switch.ll b/llvm/test/Transforms/PGOProfile/switch.ll
index dac4347a729d0..b0b32182b5baa 100644
--- a/llvm/test/Transforms/PGOProfile/switch.ll
+++ b/llvm/test/Transforms/PGOProfile/switch.ll
@@ -8,7 +8,7 @@ target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16
target triple = "x86_64-unknown-linux-gnu"
; GEN: $__llvm_profile_raw_version = comdat any
-; GEN: @__llvm_profile_raw_version = constant i64 {{[0-9]+}}, comdat
+; GEN: @__llvm_profile_raw_version = hidden constant i64 {{[0-9]+}}, comdat
; GEN: @__profn_test_switch = private constant [11 x i8] c"test_switch"
define void @test_switch(i32 %i) {
diff --git a/llvm/test/Transforms/PGOProfile/thinlto_cspgo_gen.ll b/llvm/test/Transforms/PGOProfile/thinlto_cspgo_gen.ll
index 8a408fa842fb5..266e2597a63a2 100644
--- a/llvm/test/Transforms/PGOProfile/thinlto_cspgo_gen.ll
+++ b/llvm/test/Transforms/PGOProfile/thinlto_cspgo_gen.ll
@@ -17,11 +17,11 @@
; RUN: llvm-dis %t.2.4.opt.bc -o - | FileCheck %s --check-prefixes=CSGEN,NOPREVAILING
;; Prevailing __llvm_profile_raw_version is kept by LTO.
-; PREVAILING: @__llvm_profile_raw_version = constant i64
+; PREVAILING: @__llvm_profile_raw_version = hidden constant i64
;; Non-prevailing __llvm_profile_raw_version is discarded by LTO. Ensure the
;; declaration is retained.
-; NOPREVAILING: @__llvm_profile_raw_version = external constant i64
+; NOPREVAILING: @__llvm_profile_raw_version = external hidden constant i64
; CSGEN: @__profc_
; CSGEN: @__profd_
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