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Revert "[HIP] [AlwaysInliner] Disable AlwaysInliner to eliminate undefined symbols" 

This reverts commit 03375a3fb3.
This commit is contained in:
Anshil Gandhi 2021-10-15 16:15:45 -06:00
parent 4594f81165
commit 1830ec94ac
5 changed files with 11 additions and 37 deletions
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6
clang/lib/Driver/ToolChains/Clang.cpp
View File

@ -5089,9 +5089,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
}
// Enable -mconstructor-aliases except on darwin, where we have to work around
// a linker bug (see <rdar://problem/7651567>), and CUDA device code, where
// aliases aren't supported.
if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX())
// a linker bug (see <rdar://problem/7651567>), and CUDA/AMDGPU device code,
// where aliases aren't supported.
if (!RawTriple.isOSDarwin() && !RawTriple.isNVPTX() && !RawTriple.isAMDGPU())
CmdArgs.push_back("-mconstructor-aliases");
// Darwin's kernel doesn't support guard variables; just die if we

17
clang/test/CodeGenCUDA/amdgpu-alias-undef-symbols.cu
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@ -1,17 +0,0 @@
// REQUIRES: amdgpu-registered-target, clang-driver
// RUN: %clang --offload-arch=gfx906 --cuda-device-only -nogpulib -nogpuinc -x hip -emit-llvm -S -o - %s \
// RUN: -fgpu-rdc -O3 -mllvm -amdgpu-early-inline-all=true -mllvm -amdgpu-function-calls=false | \
// RUN: FileCheck %s
#include "Inputs/cuda.h"
// CHECK: %struct.B = type { i8 }
struct B {
// CHECK: @_ZN1BC1Ei = hidden unnamed_addr alias void (%struct.B*, i32), void (%struct.B*, i32)* @_ZN1BC2Ei
__device__ B(int x);
};
__device__ B::B(int x) {
}

5
llvm/lib/Target/AMDGPU/AMDGPUAlwaysInlinePass.cpp
View File

@ -15,7 +15,6 @@
#include "AMDGPU.h"
#include "AMDGPUTargetMachine.h"
#include "Utils/AMDGPUBaseInfo.h"
#include "llvm/CodeGen/CommandFlags.h"
#include "llvm/IR/Module.h"
#include "llvm/Pass.h"
#include "llvm/Support/CommandLine.h"
@ -91,13 +90,9 @@ static bool alwaysInlineImpl(Module &M, bool GlobalOpt) {
SmallPtrSet<Function *, 8> FuncsToAlwaysInline;
SmallPtrSet<Function *, 8> FuncsToNoInline;
Triple TT(M.getTargetTriple());
for (GlobalAlias &A : M.aliases()) {
if (Function* F = dyn_cast<Function>(A.getAliasee())) {
if (TT.getArch() == Triple::amdgcn &&
A.getLinkage() != GlobalValue::InternalLinkage)
continue;
A.replaceAllUsesWith(F);
AliasesToRemove.push_back(&A);
}

5
llvm/lib/Target/AMDGPU/AMDGPUResourceUsageAnalysis.cpp
View File

@ -29,8 +29,6 @@
#include "SIMachineFunctionInfo.h"
#include "llvm/Analysis/CallGraph.h"
#include "llvm/CodeGen/TargetPassConfig.h"
#include "llvm/IR/GlobalAlias.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/Target/TargetMachine.h"
using namespace llvm;
@ -63,8 +61,7 @@ static const Function *getCalleeFunction(const MachineOperand &Op) {
assert(Op.getImm() == 0);
return nullptr;
}
if (auto *GA = dyn_cast<GlobalAlias>(Op.getGlobal()))
return cast<Function>(GA->getOperand(0));
return cast<Function>(Op.getGlobal());
}

15
llvm/test/CodeGen/AMDGPU/inline-calls.ll
View File

@ -1,6 +1,6 @@
; RUN: llc -mtriple amdgcn-unknown-linux-gnu -mcpu=tahiti -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple amdgcn-unknown-linux-gnu -mcpu=tonga -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple r600-unknown-linux-gnu -mcpu=redwood -verify-machineinstrs < %s | FileCheck %s --check-prefix=R600
; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -march=r600 -mcpu=redwood -verify-machineinstrs < %s | FileCheck %s
; ALL-NOT: {{^}}func:
define internal i32 @func(i32 %a) {
@ -9,7 +9,7 @@ entry:
ret i32 %tmp0
}
; CHECK: {{^}}kernel:
; ALL: {{^}}kernel:
; GCN-NOT: s_swappc_b64
define amdgpu_kernel void @kernel(i32 addrspace(1)* %out) {
entry:
@ -18,13 +18,12 @@ entry:
ret void
}
; CHECK: func_alias
; R600-NOT: func_alias
; CHECK-NOT: func_alias
; ALL-NOT: func_alias
@func_alias = alias i32 (i32), i32 (i32)* @func
; CHECK-NOT: {{^}}kernel3:
; ALL: {{^}}kernel3:
; GCN-NOT: s_swappc_b64
; R600: {{^}}kernel3:
define amdgpu_kernel void @kernel3(i32 addrspace(1)* %out) {
entry:
%tmp0 = call i32 @func_alias(i32 1)