https://github.com/arsenm updated
https://github.com/llvm/llvm-project/pull/96876
>From 6e2f7566e6367d438f95c452536f123fbd8d0e2a Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Wed, 26 Jun 2024 23:18:32 +0200
Subject: [PATCH] clang/AMDGPU: Emit atomicrmw for flat/global atomic min/max
f64 builtins
---
clang/lib/CodeGen/CGBuiltin.cpp | 36 +++++--------------
.../builtins-fp-atomics-gfx90a.cl | 18 ++++++----
2 files changed, 21 insertions(+), 33 deletions(-)
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index e5a9c715c8a07..e925b02ca110a 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -18633,32 +18633,6 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned
BuiltinID,
Function *F = CGM.getIntrinsic(Intrin, { Src0->getType() });
return Builder.CreateCall(F, { Src0, Builder.getFalse() });
}
- case AMDGPU::BI__builtin_amdgcn_global_atomic_fmin_f64:
- case AMDGPU::BI__builtin_amdgcn_global_atomic_fmax_f64:
- case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmin_f64:
- case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmax_f64: {
- Intrinsic::ID IID;
- llvm::Type *ArgTy = llvm::Type::getDoubleTy(getLLVMContext());
- switch (BuiltinID) {
- case AMDGPU::BI__builtin_amdgcn_global_atomic_fmin_f64:
- IID = Intrinsic::amdgcn_global_atomic_fmin;
- break;
- case AMDGPU::BI__builtin_amdgcn_global_atomic_fmax_f64:
- IID = Intrinsic::amdgcn_global_atomic_fmax;
- break;
- case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmin_f64:
- IID = Intrinsic::amdgcn_flat_atomic_fmin;
- break;
- case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmax_f64:
- IID = Intrinsic::amdgcn_flat_atomic_fmax;
- break;
- }
- llvm::Value *Addr = EmitScalarExpr(E->getArg(0));
- llvm::Value *Val = EmitScalarExpr(E->getArg(1));
- llvm::Function *F =
- CGM.getIntrinsic(IID, {ArgTy, Addr->getType(), Val->getType()});
- return Builder.CreateCall(F, {Addr, Val});
- }
case AMDGPU::BI__builtin_amdgcn_global_load_tr_b64_i32:
case AMDGPU::BI__builtin_amdgcn_global_load_tr_b64_v2i32:
case AMDGPU::BI__builtin_amdgcn_global_load_tr_b128_v4i16:
@@ -19034,7 +19008,11 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned
BuiltinID,
case AMDGPU::BI__builtin_amdgcn_flat_atomic_fadd_f32:
case AMDGPU::BI__builtin_amdgcn_flat_atomic_fadd_f64:
case AMDGPU::BI__builtin_amdgcn_global_atomic_fadd_v2bf16:
- case AMDGPU::BI__builtin_amdgcn_flat_atomic_fadd_v2bf16: {
+ case AMDGPU::BI__builtin_amdgcn_flat_atomic_fadd_v2bf16:
+ case AMDGPU::BI__builtin_amdgcn_global_atomic_fmin_f64:
+ case AMDGPU::BI__builtin_amdgcn_global_atomic_fmax_f64:
+ case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmin_f64:
+ case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmax_f64: {
llvm::AtomicRMWInst::BinOp BinOp;
switch (BuiltinID) {
case AMDGPU::BI__builtin_amdgcn_atomic_inc32:
@@ -19061,8 +19039,12 @@ Value *CodeGenFunction::EmitAMDGPUBuiltinExpr(unsigned
BuiltinID,
BinOp = llvm::AtomicRMWInst::FAdd;
break;
case AMDGPU::BI__builtin_amdgcn_ds_fminf:
+ case AMDGPU::BI__builtin_amdgcn_global_atomic_fmin_f64:
+ case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmin_f64:
BinOp = llvm::AtomicRMWInst::FMin;
break;
+ case AMDGPU::BI__builtin_amdgcn_global_atomic_fmax_f64:
+ case AMDGPU::BI__builtin_amdgcn_flat_atomic_fmax_f64:
case AMDGPU::BI__builtin_amdgcn_ds_fmaxf:
BinOp = llvm::AtomicRMWInst::FMax;
break;
diff --git a/clang/test/CodeGenOpenCL/builtins-fp-atomics-gfx90a.cl
b/clang/test/CodeGenOpenCL/builtins-fp-atomics-gfx90a.cl
index 9381ce951df3e..556e553903d1a 100644
--- a/clang/test/CodeGenOpenCL/builtins-fp-atomics-gfx90a.cl
+++ b/clang/test/CodeGenOpenCL/builtins-fp-atomics-gfx90a.cl
@@ -27,7 +27,8 @@ void test_global_add_half2(__global half2 *addr, half2 x) {
}
// CHECK-LABEL: test_global_global_min_f64
-// CHECK: call double @llvm.amdgcn.global.atomic.fmin.f64.p1.f64(ptr
addrspace(1) %{{.*}}, double %{{.*}})
+// CHECK: = atomicrmw fmin ptr addrspace(1) {{.+}}, double %{{.+}}
syncscope("agent") monotonic, align 8, !amdgpu.no.fine.grained.memory
!{{[0-9]+$}}
+
// GFX90A-LABEL: test_global_global_min_f64$local
// GFX90A: global_atomic_min_f64
void test_global_global_min_f64(__global double *addr, double x){
@@ -36,7 +37,8 @@ void test_global_global_min_f64(__global double *addr, double
x){
}
// CHECK-LABEL: test_global_max_f64
-// CHECK: call double @llvm.amdgcn.global.atomic.fmax.f64.p1.f64(ptr
addrspace(1) %{{.*}}, double %{{.*}})
+// CHECK: = atomicrmw fmax ptr addrspace(1) {{.+}}, double %{{.+}}
syncscope("agent") monotonic, align 8, !amdgpu.no.fine.grained.memory
!{{[0-9]+$}}
+
// GFX90A-LABEL: test_global_max_f64$local
// GFX90A: global_atomic_max_f64
void test_global_max_f64(__global double *addr, double x){
@@ -65,7 +67,8 @@ void test_flat_global_add_f64(__global double *addr, double
x){
}
// CHECK-LABEL: test_flat_min_flat_f64
-// CHECK: call double @llvm.amdgcn.flat.atomic.fmin.f64.p0.f64(ptr %{{.*}},
double %{{.*}})
+// CHECK: = atomicrmw fmin ptr {{.+}}, double %{{.+}} syncscope("agent")
monotonic, align 8, !amdgpu.no.fine.grained.memory !{{[0-9]+$}}
+
// GFX90A-LABEL: test_flat_min_flat_f64$local
// GFX90A: flat_atomic_min_f64
void test_flat_min_flat_f64(__generic double *addr, double x){
@@ -74,7 +77,8 @@ void test_flat_min_flat_f64(__generic double *addr, double x){
}
// CHECK-LABEL: test_flat_global_min_f64
-// CHECK: call double @llvm.amdgcn.flat.atomic.fmin.f64.p1.f64(ptr
addrspace(1) %{{.*}}, double %{{.*}})
+// CHECK: = atomicrmw fmin ptr addrspace(1) {{.+}}, double %{{.+}}
syncscope("agent") monotonic, align 8, !amdgpu.no.fine.grained.memory
!{{[0-9]+$}}
+
// GFX90A: test_flat_global_min_f64$local
// GFX90A: global_atomic_min_f64
void test_flat_global_min_f64(__global double *addr, double x){
@@ -83,7 +87,8 @@ void test_flat_global_min_f64(__global double *addr, double
x){
}
// CHECK-LABEL: test_flat_max_flat_f64
-// CHECK: call double @llvm.amdgcn.flat.atomic.fmax.f64.p0.f64(ptr %{{.*}},
double %{{.*}})
+// CHECK: = atomicrmw fmax ptr {{.+}}, double %{{.+}} syncscope("agent")
monotonic, align 8, !amdgpu.no.fine.grained.memory !{{[0-9]+$}}
+
// GFX90A-LABEL: test_flat_max_flat_f64$local
// GFX90A: flat_atomic_max_f64
void test_flat_max_flat_f64(__generic double *addr, double x){
@@ -92,7 +97,8 @@ void test_flat_max_flat_f64(__generic double *addr, double x){
}
// CHECK-LABEL: test_flat_global_max_f64
-// CHECK: call double @llvm.amdgcn.flat.atomic.fmax.f64.p1.f64(ptr
addrspace(1) %{{.*}}, double %{{.*}})
+// CHECK: = atomicrmw fmax ptr addrspace(1) {{.+}}, double %{{.+}}
syncscope("agent") monotonic, align 8, !amdgpu.no.fine.grained.memory
!{{[0-9]+$}}
+
// GFX90A-LABEL: test_flat_global_max_f64$local
// GFX90A: global_atomic_max_f64
void test_flat_global_max_f64(__global double *addr, double x){
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