You've already forked linux-packaging-mono
188 lines
6.7 KiB
LLVM
188 lines
6.7 KiB
LLVM
; RUN: llc < %s -march=nvptx -mcpu=sm_20 | FileCheck %s --check-prefix PTX
|
|
; RUN: llc < %s -march=nvptx64 -mcpu=sm_20 | FileCheck %s --check-prefix PTX
|
|
; RUN: opt -mtriple=nvptx-- < %s -S -infer-address-spaces | FileCheck %s --check-prefix IR
|
|
; RUN: opt -mtriple=nvptx64-- < %s -S -infer-address-spaces | FileCheck %s --check-prefix IR
|
|
|
|
@array = internal addrspace(3) global [10 x float] zeroinitializer, align 4
|
|
@scalar = internal addrspace(3) global float 0.000000e+00, align 4
|
|
@generic_scalar = internal global float 0.000000e+00, align 4
|
|
|
|
define float @ld_from_shared() {
|
|
%1 = addrspacecast float* @generic_scalar to float addrspace(3)*
|
|
%2 = load float, float addrspace(3)* %1
|
|
ret float %2
|
|
}
|
|
|
|
; Verifies nvptx-favor-non-generic correctly optimizes generic address space
|
|
; usage to non-generic address space usage for the patterns we claim to handle:
|
|
; 1. load cast
|
|
; 2. store cast
|
|
; 3. load gep cast
|
|
; 4. store gep cast
|
|
; gep and cast can be an instruction or a constant expression. This function
|
|
; tries all possible combinations.
|
|
define void @ld_st_shared_f32(i32 %i, float %v) {
|
|
; IR-LABEL: @ld_st_shared_f32
|
|
; IR-NOT: addrspacecast
|
|
; PTX-LABEL: ld_st_shared_f32(
|
|
; load cast
|
|
%1 = load float, float* addrspacecast (float addrspace(3)* @scalar to float*), align 4
|
|
call void @use(float %1)
|
|
; PTX: ld.shared.f32 %f{{[0-9]+}}, [scalar];
|
|
; store cast
|
|
store float %v, float* addrspacecast (float addrspace(3)* @scalar to float*), align 4
|
|
; PTX: st.shared.f32 [scalar], %f{{[0-9]+}};
|
|
; use syncthreads to disable optimizations across components
|
|
call void @llvm.nvvm.barrier0()
|
|
; PTX: bar.sync 0;
|
|
|
|
; cast; load
|
|
%2 = addrspacecast float addrspace(3)* @scalar to float*
|
|
%3 = load float, float* %2, align 4
|
|
call void @use(float %3)
|
|
; PTX: ld.shared.f32 %f{{[0-9]+}}, [scalar];
|
|
; cast; store
|
|
store float %v, float* %2, align 4
|
|
; PTX: st.shared.f32 [scalar], %f{{[0-9]+}};
|
|
call void @llvm.nvvm.barrier0()
|
|
; PTX: bar.sync 0;
|
|
|
|
; load gep cast
|
|
%4 = load float, float* getelementptr inbounds ([10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i32 0, i32 5), align 4
|
|
call void @use(float %4)
|
|
; PTX: ld.shared.f32 %f{{[0-9]+}}, [array+20];
|
|
; store gep cast
|
|
store float %v, float* getelementptr inbounds ([10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i32 0, i32 5), align 4
|
|
; PTX: st.shared.f32 [array+20], %f{{[0-9]+}};
|
|
call void @llvm.nvvm.barrier0()
|
|
; PTX: bar.sync 0;
|
|
|
|
; gep cast; load
|
|
%5 = getelementptr inbounds [10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i32 0, i32 5
|
|
%6 = load float, float* %5, align 4
|
|
call void @use(float %6)
|
|
; PTX: ld.shared.f32 %f{{[0-9]+}}, [array+20];
|
|
; gep cast; store
|
|
store float %v, float* %5, align 4
|
|
; PTX: st.shared.f32 [array+20], %f{{[0-9]+}};
|
|
call void @llvm.nvvm.barrier0()
|
|
; PTX: bar.sync 0;
|
|
|
|
; cast; gep; load
|
|
%7 = addrspacecast [10 x float] addrspace(3)* @array to [10 x float]*
|
|
%8 = getelementptr inbounds [10 x float], [10 x float]* %7, i32 0, i32 %i
|
|
%9 = load float, float* %8, align 4
|
|
call void @use(float %9)
|
|
; PTX: ld.shared.f32 %f{{[0-9]+}}, [%{{(r|rl|rd)[0-9]+}}];
|
|
; cast; gep; store
|
|
store float %v, float* %8, align 4
|
|
; PTX: st.shared.f32 [%{{(r|rl|rd)[0-9]+}}], %f{{[0-9]+}};
|
|
call void @llvm.nvvm.barrier0()
|
|
; PTX: bar.sync 0;
|
|
|
|
ret void
|
|
}
|
|
|
|
; When hoisting an addrspacecast between different pointer types, replace the
|
|
; addrspacecast with a bitcast.
|
|
define i32 @ld_int_from_float() {
|
|
; IR-LABEL: @ld_int_from_float
|
|
; IR: load i32, i32 addrspace(3)* bitcast (float addrspace(3)* @scalar to i32 addrspace(3)*)
|
|
; PTX-LABEL: ld_int_from_float(
|
|
; PTX: ld.shared.u{{(32|64)}}
|
|
%1 = load i32, i32* addrspacecast(float addrspace(3)* @scalar to i32*), align 4
|
|
ret i32 %1
|
|
}
|
|
|
|
define i32 @ld_int_from_global_float(float addrspace(1)* %input, i32 %i, i32 %j) {
|
|
; IR-LABEL: @ld_int_from_global_float(
|
|
; PTX-LABEL: ld_int_from_global_float(
|
|
%1 = addrspacecast float addrspace(1)* %input to float*
|
|
%2 = getelementptr float, float* %1, i32 %i
|
|
; IR-NEXT: getelementptr float, float addrspace(1)* %input, i32 %i
|
|
%3 = getelementptr float, float* %2, i32 %j
|
|
; IR-NEXT: getelementptr float, float addrspace(1)* {{%[^,]+}}, i32 %j
|
|
%4 = bitcast float* %3 to i32*
|
|
; IR-NEXT: bitcast float addrspace(1)* {{%[^ ]+}} to i32 addrspace(1)*
|
|
%5 = load i32, i32* %4
|
|
; IR-NEXT: load i32, i32 addrspace(1)* {{%.+}}
|
|
; PTX-LABEL: ld.global
|
|
ret i32 %5
|
|
}
|
|
|
|
define void @nested_const_expr() {
|
|
; PTX-LABEL: nested_const_expr(
|
|
; store 1 to bitcast(gep(addrspacecast(array), 0, 1))
|
|
store i32 1, i32* bitcast (float* getelementptr ([10 x float], [10 x float]* addrspacecast ([10 x float] addrspace(3)* @array to [10 x float]*), i64 0, i64 1) to i32*), align 4
|
|
; PTX: mov.u32 %r1, 1;
|
|
; PTX-NEXT: st.shared.u32 [array+4], %r1;
|
|
ret void
|
|
}
|
|
|
|
define void @rauw(float addrspace(1)* %input) {
|
|
%generic_input = addrspacecast float addrspace(1)* %input to float*
|
|
%addr = getelementptr float, float* %generic_input, i64 10
|
|
%v = load float, float* %addr
|
|
store float %v, float* %addr
|
|
ret void
|
|
; IR-LABEL: @rauw(
|
|
; IR-NEXT: %addr = getelementptr float, float addrspace(1)* %input, i64 10
|
|
; IR-NEXT: %v = load float, float addrspace(1)* %addr
|
|
; IR-NEXT: store float %v, float addrspace(1)* %addr
|
|
; IR-NEXT: ret void
|
|
}
|
|
|
|
define void @loop() {
|
|
; IR-LABEL: @loop(
|
|
entry:
|
|
%p = addrspacecast [10 x float] addrspace(3)* @array to float*
|
|
%end = getelementptr float, float* %p, i64 10
|
|
br label %loop
|
|
|
|
loop:
|
|
%i = phi float* [ %p, %entry ], [ %i2, %loop ]
|
|
; IR: phi float addrspace(3)* [ %p, %entry ], [ %i2, %loop ]
|
|
%v = load float, float* %i
|
|
; IR: %v = load float, float addrspace(3)* %i
|
|
call void @use(float %v)
|
|
%i2 = getelementptr float, float* %i, i64 1
|
|
; IR: %i2 = getelementptr float, float addrspace(3)* %i, i64 1
|
|
%exit_cond = icmp eq float* %i2, %end
|
|
br i1 %exit_cond, label %exit, label %loop
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
@generic_end = external global float*
|
|
|
|
define void @loop_with_generic_bound() {
|
|
; IR-LABEL: @loop_with_generic_bound(
|
|
entry:
|
|
%p = addrspacecast [10 x float] addrspace(3)* @array to float*
|
|
%end = load float*, float** @generic_end
|
|
br label %loop
|
|
|
|
loop:
|
|
%i = phi float* [ %p, %entry ], [ %i2, %loop ]
|
|
; IR: phi float addrspace(3)* [ %p, %entry ], [ %i2, %loop ]
|
|
%v = load float, float* %i
|
|
; IR: %v = load float, float addrspace(3)* %i
|
|
call void @use(float %v)
|
|
%i2 = getelementptr float, float* %i, i64 1
|
|
; IR: %i2 = getelementptr float, float addrspace(3)* %i, i64 1
|
|
%exit_cond = icmp eq float* %i2, %end
|
|
; IR: addrspacecast float addrspace(3)* %i2 to float*
|
|
; IR: icmp eq float* %{{[0-9]+}}, %end
|
|
br i1 %exit_cond, label %exit, label %loop
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.nvvm.barrier0() #3
|
|
|
|
declare void @use(float)
|
|
|
|
attributes #3 = { noduplicate nounwind }
|