caio/clang-p2996
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
12ccdd67aaf56bd05ab3375d81c58dfd5a2db02c
clang-p2996/clang/test/CodeGenCUDA/managed-var.cu
Yaxun (Sam) Liu 04fb81674e [CUDA][HIP] Externalize kernels with internal linkage 
This patch is a continuation of https://reviews.llvm.org/D123353.

Not only kernels in anonymous namespace, but also template
kernels with template arguments in anonymous namespace
need to be externalized.

To be more generic, this patch checks the linkage of a kernel
assuming the kernel does not have __global__ attribute. If
the linkage is internal then clang will externalize it.

This patch also fixes the postfix for externalized symbol
since nvptx does not allow '.' in symbol name.

Reviewed by: Artem Belevich

Differential Revision: https://reviews.llvm.org/D124189

Fixes: https://github.com/llvm/llvm-project/issues/54560
2022-04-22 17:05:36 -04:00

170 lines
7.3 KiB
Plaintext
Raw Blame History

// RUN: %clang_cc1 -no-opaque-pointers -triple amdgcn-amd-amdhsa -fcuda-is-device -std=c++11 \
// RUN: -emit-llvm -o - -x hip %s | FileCheck \
// RUN: -check-prefixes=COMMON,DEV,NORDC-D %s
// RUN: %clang_cc1 -no-opaque-pointers -triple amdgcn-amd-amdhsa -fcuda-is-device -std=c++11 \
// RUN: -emit-llvm -fgpu-rdc -cuid=abc -o - -x hip %s > %t.dev
// RUN: cat %t.dev | FileCheck -check-prefixes=COMMON,DEV,RDC-D %s
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-gnu-linux -std=c++11 \
// RUN: -emit-llvm -o - -x hip %s | FileCheck \
// RUN: -check-prefixes=COMMON,HOST,NORDC %s
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-gnu-linux -std=c++11 \
// RUN: -emit-llvm -fgpu-rdc -cuid=abc -o - -x hip %s > %t.host
// RUN: cat %t.host | FileCheck -check-prefixes=COMMON,HOST,RDC %s
// Check device and host compilation use the same postfix for static
// variable name.
// RUN: cat %t.dev %t.host | FileCheck -check-prefix=POSTFIX %s
#include "Inputs/cuda.h"
struct vec {
float x,y,z;
};
// DEV-DAG: @x.managed = addrspace(1) externally_initialized global i32 1, align 4
// DEV-DAG: @x = addrspace(1) externally_initialized global i32 addrspace(1)* null
// NORDC-DAG: @x.managed = internal global i32 1
// RDC-DAG: @x.managed = global i32 1
// NORDC-DAG: @x = internal externally_initialized global i32* null
// RDC-DAG: @x = externally_initialized global i32* null
// HOST-DAG: @[[DEVNAMEX:[0-9]+]] = {{.*}}c"x\00"
__managed__ int x = 1;
// DEV-DAG: @v.managed = addrspace(1) externally_initialized global [100 x %struct.vec] zeroinitializer, align 4
// DEV-DAG: @v = addrspace(1) externally_initialized global [100 x %struct.vec] addrspace(1)* null
__managed__ vec v[100];
// DEV-DAG: @v2.managed = addrspace(1) externally_initialized global <{ %struct.vec, [99 x %struct.vec] }> <{ %struct.vec { float 1.000000e+00, float 1.000000e+00, float 1.000000e+00 }, [99 x %struct.vec] zeroinitializer }>, align 4
// DEV-DAG: @v2 = addrspace(1) externally_initialized global <{ %struct.vec, [99 x %struct.vec] }> addrspace(1)* null
__managed__ vec v2[100] = {{1, 1, 1}};
// DEV-DAG: @ex.managed = external addrspace(1) global i32, align 4
// DEV-DAG: @ex = external addrspace(1) externally_initialized global i32 addrspace(1)*
// HOST-DAG: @ex.managed = external global i32
// HOST-DAG: @ex = external externally_initialized global i32*
extern __managed__ int ex;
// NORDC-D-DAG: @_ZL2sx.managed = addrspace(1) externally_initialized global i32 1, align 4
// NORDC-D-DAG: @_ZL2sx = addrspace(1) externally_initialized global i32 addrspace(1)* null
// RDC-D-DAG: @_ZL2sx.static.[[HASH:.*]].managed = addrspace(1) externally_initialized global i32 1, align 4
// RDC-D-DAG: @_ZL2sx.static.[[HASH]] = addrspace(1) externally_initialized global i32 addrspace(1)* null
// HOST-DAG: @_ZL2sx.managed = internal global i32 1
// HOST-DAG: @_ZL2sx = internal externally_initialized global i32* null
// NORDC-DAG: @[[DEVNAMESX:[0-9]+]] = {{.*}}c"_ZL2sx\00"
// RDC-DAG: @[[DEVNAMESX:[0-9]+]] = {{.*}}c"_ZL2sx.static.[[HASH:.*]]\00"
// POSTFIX: @_ZL2sx.static.[[HASH:.*]] = addrspace(1) externally_initialized global i32 addrspace(1)* null
// POSTFIX: @[[DEVNAMESX:[0-9]+]] = {{.*}}c"_ZL2sx.static.[[HASH]]\00"
static __managed__ int sx = 1;
// DEV-DAG: @llvm.compiler.used
// DEV-SAME-DAG: @x.managed
// DEV-SAME-DAG: @x
// DEV-SAME-DAG: @v.managed
// DEV-SAME-DAG: @v
// DEV-SAME-DAG: @_ZL2sx.managed
// DEV-SAME-DAG: @_ZL2sx
// Force ex and sx mitted in device compilation.
__global__ void foo(int *z) {
*z = x + ex + sx;
v[1].x = 2;
}
// Force ex and sx emitted in host compilatioin.
int foo2() {
return ex + sx;
}
// COMMON-LABEL: define {{.*}}@_Z4loadv()
// DEV: %ld.managed = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(1)* @x, align 4
// DEV: %0 = addrspacecast i32 addrspace(1)* %ld.managed to i32*
// DEV: %1 = load i32, i32* %0, align 4
// DEV: ret i32 %1
// HOST: %ld.managed = load i32*, i32** @x, align 4
// HOST: %0 = load i32, i32* %ld.managed, align 4
// HOST: ret i32 %0
__device__ __host__ int load() {
return x;
}
// COMMON-LABEL: define {{.*}}@_Z5storev()
// DEV: %ld.managed = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(1)* @x, align 4
// DEV: %0 = addrspacecast i32 addrspace(1)* %ld.managed to i32*
// DEV: store i32 2, i32* %0, align 4
// HOST: %ld.managed = load i32*, i32** @x, align 4
// HOST: store i32 2, i32* %ld.managed, align 4
__device__ __host__ void store() {
x = 2;
}
// COMMON-LABEL: define {{.*}}@_Z10addr_takenv()
// DEV: %0 = addrspacecast i32 addrspace(1)* %ld.managed to i32*
// DEV: store i32* %0, i32** %p.ascast, align 8
// DEV: %1 = load i32*, i32** %p.ascast, align 8
// DEV: store i32 3, i32* %1, align 4
// HOST: %ld.managed = load i32*, i32** @x, align 4
// HOST: store i32* %ld.managed, i32** %p, align 8
// HOST: %0 = load i32*, i32** %p, align 8
// HOST: store i32 3, i32* %0, align 4
__device__ __host__ void addr_taken() {
int *p = &x;
*p = 3;
}
// HOST-LABEL: define {{.*}}@_Z5load2v()
// HOST: %ld.managed = load [100 x %struct.vec]*, [100 x %struct.vec]** @v, align 16
// HOST: %0 = getelementptr inbounds [100 x %struct.vec], [100 x %struct.vec]* %ld.managed, i64 0, i64 1, i32 0
// HOST: %1 = load float, float* %0, align 4
// HOST: ret float %1
__device__ __host__ float load2() {
return v[1].x;
}
// HOST-LABEL: define {{.*}}@_Z5load3v()
// HOST: %ld.managed = load <{ %struct.vec, [99 x %struct.vec] }>*, <{ %struct.vec, [99 x %struct.vec] }>** @v2, align 16
// HOST: %0 = bitcast <{ %struct.vec, [99 x %struct.vec] }>* %ld.managed to [100 x %struct.vec]*
// HOST: %1 = getelementptr inbounds [100 x %struct.vec], [100 x %struct.vec]* %0, i64 0, i64 1, i32 1
// HOST: %2 = load float, float* %1, align 4
// HOST: ret float %2
float load3() {
return v2[1].y;
}
// HOST-LABEL: define {{.*}}@_Z11addr_taken2v()
// HOST: %ld.managed = load [100 x %struct.vec]*, [100 x %struct.vec]** @v, align 16
// HOST: %0 = getelementptr inbounds [100 x %struct.vec], [100 x %struct.vec]* %ld.managed, i64 0, i64 1, i32 0
// HOST: %1 = ptrtoint float* %0 to i64
// HOST: %ld.managed1 = load <{ %struct.vec, [99 x %struct.vec] }>*, <{ %struct.vec, [99 x %struct.vec] }>** @v2, align 16
// HOST: %2 = bitcast <{ %struct.vec, [99 x %struct.vec] }>* %ld.managed1 to [100 x %struct.vec]*
// HOST: %3 = getelementptr inbounds [100 x %struct.vec], [100 x %struct.vec]* %2, i64 0, i64 1, i32 1
// HOST: %4 = ptrtoint float* %3 to i64
// HOST: %5 = sub i64 %4, %1
// HOST: %6 = sdiv exact i64 %5, 4
// HOST: %7 = sitofp i64 %6 to float
// HOST: ret float %7
float addr_taken2() {
return (float)reinterpret_cast<long>(&(v2[1].y)-&(v[1].x));
}
// COMMON-LABEL: define {{.*}}@_Z5load4v()
// DEV: %ld.managed = load i32 addrspace(1)*, i32 addrspace(1)* addrspace(1)* @ex, align 4
// DEV: %0 = addrspacecast i32 addrspace(1)* %ld.managed to i32*
// DEV: %1 = load i32, i32* %0, align 4
// DEV: ret i32 %1
// HOST: %ld.managed = load i32*, i32** @ex, align 4
// HOST: %0 = load i32, i32* %ld.managed, align 4
// HOST: ret i32 %0
__device__ __host__ int load4() {
return ex;
}
// HOST-DAG: __hipRegisterManagedVar({{.*}}@x {{.*}}@x.managed {{.*}}@[[DEVNAMEX]]{{.*}}, i64 4, i32 4)
// HOST-DAG: __hipRegisterManagedVar({{.*}}@_ZL2sx {{.*}}@_ZL2sx.managed {{.*}}@[[DEVNAMESX]]
// HOST-NOT: __hipRegisterManagedVar({{.*}}@ex {{.*}}@ex.managed
// HOST-DAG: declare void @__hipRegisterManagedVar(i8**, i8*, i8*, i8*, i64, i32)
Reference in New Issue View Git Blame Copy Permalink