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|
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 --amdhsa-code-object-version=3 -filetype=obj -o - < %s | llvm-readelf --notes - | FileCheck %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 --amdhsa-code-object-version=3 < %s | FileCheck --check-prefix=CHECK %s
declare void @function1()
declare void @function2() #0
; Function Attrs: noinline
define void @function3(i8 addrspace(4)* %argptr, i8 addrspace(4)* addrspace(1)* %sink) #4 {
store i8 addrspace(4)* %argptr, i8 addrspace(4)* addrspace(1)* %sink, align 8
ret void
}
; Function Attrs: noinline
define void @function4(i64 %arg, i64* %a) #4 {
store i64 %arg, i64* %a
ret void
}
; Function Attrs: noinline
define void @function5(i8 addrspace(4)* %ptr, i64* %sink) #4 {
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 8
%cast = bitcast i8 addrspace(4)* %gep to i64 addrspace(4)*
%x = load i64, i64 addrspace(4)* %cast
store i64 %x, i64* %sink
ret void
}
; Function Attrs: nounwind readnone speculatable willreturn
declare align 4 i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr() #1
; CHECK: amdhsa.kernels:
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel10
define amdgpu_kernel void @test_kernel10(i8* %a) #2 {
store i8 3, i8* %a, align 1
ret void
}
; Call to an extern function
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel20
define amdgpu_kernel void @test_kernel20(i8* %a) #2 {
call void @function1()
store i8 3, i8* %a, align 1
ret void
}
; Explicit attribute on kernel
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel21
define amdgpu_kernel void @test_kernel21(i8* %a) #3 {
call void @function1()
store i8 3, i8* %a, align 1
ret void
}
; Explicit attribute on extern callee
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel22
define amdgpu_kernel void @test_kernel22(i8* %a) #2 {
call void @function2()
store i8 3, i8* %a, align 1
ret void
}
; Access more bytes than the pointer size
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel30
define amdgpu_kernel void @test_kernel30(i128* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 16
%cast = bitcast i8 addrspace(4)* %gep to i128 addrspace(4)*
%x = load i128, i128 addrspace(4)* %cast
store i128 %x, i128* %a
ret void
}
; Typical load of hostcall buffer pointer
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel40
define amdgpu_kernel void @test_kernel40(i64* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 24
%cast = bitcast i8 addrspace(4)* %gep to i64 addrspace(4)*
%x = load i64, i64 addrspace(4)* %cast
store i64 %x, i64* %a
ret void
}
; Typical usage, overriden by explicit attribute on kernel
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel41
define amdgpu_kernel void @test_kernel41(i64* %a) #3 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 24
%cast = bitcast i8 addrspace(4)* %gep to i64 addrspace(4)*
%x = load i64, i64 addrspace(4)* %cast
store i64 %x, i64* %a
ret void
}
; Access to implicit arg before the hostcall pointer
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel42
define amdgpu_kernel void @test_kernel42(i64* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 16
%cast = bitcast i8 addrspace(4)* %gep to i64 addrspace(4)*
%x = load i64, i64 addrspace(4)* %cast
store i64 %x, i64* %a
ret void
}
; Access to implicit arg after the hostcall pointer
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel43
define amdgpu_kernel void @test_kernel43(i64* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 32
%cast = bitcast i8 addrspace(4)* %gep to i64 addrspace(4)*
%x = load i64, i64 addrspace(4)* %cast
store i64 %x, i64* %a
ret void
}
; Accessing a byte just before the hostcall pointer
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel44
define amdgpu_kernel void @test_kernel44(i8* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 23
%x = load i8, i8 addrspace(4)* %gep, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Accessing a byte inside the hostcall pointer
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel45
define amdgpu_kernel void @test_kernel45(i8* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 24
%x = load i8, i8 addrspace(4)* %gep, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Accessing a byte inside the hostcall pointer
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel46
define amdgpu_kernel void @test_kernel46(i8* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 31
%x = load i8, i8 addrspace(4)* %gep, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Accessing a byte just after the hostcall pointer
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel47
define amdgpu_kernel void @test_kernel47(i8* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 32
%x = load i8, i8 addrspace(4)* %gep, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Access with an unknown offset
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel50
define amdgpu_kernel void @test_kernel50(i8* %a, i32 %b) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i32 %b
%x = load i8, i8 addrspace(4)* %gep, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Multiple geps reaching the hostcall pointer argument.
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel51
define amdgpu_kernel void @test_kernel51(i8* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep1 = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 16
%gep2 = getelementptr inbounds i8, i8 addrspace(4)* %gep1, i64 8
%x = load i8, i8 addrspace(4)* %gep2, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Multiple geps not reaching the hostcall pointer argument.
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel52
define amdgpu_kernel void @test_kernel52(i8* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep1 = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 16
%gep2 = getelementptr inbounds i8, i8 addrspace(4)* %gep1, i64 16
%x = load i8, i8 addrspace(4)* %gep2, align 1
store i8 %x, i8* %a, align 1
ret void
}
; Hostcall pointer used inside a function call
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel60
define amdgpu_kernel void @test_kernel60(i64* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 24
%cast = bitcast i8 addrspace(4)* %gep to i64 addrspace(4)*
%x = load i64, i64 addrspace(4)* %cast
call void @function4(i64 %x, i64* %a)
ret void
}
; Hostcall pointer retrieved inside a function call; chain of geps
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel61
define amdgpu_kernel void @test_kernel61(i64* %a) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i64 16
call void @function5(i8 addrspace(4)* %gep, i64* %a)
ret void
}
; Pointer captured
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel70
define amdgpu_kernel void @test_kernel70(i8 addrspace(4)* addrspace(1)* %sink) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i32 42
store i8 addrspace(4)* %gep, i8 addrspace(4)* addrspace(1)* %sink, align 8
ret void
}
; Pointer captured inside function call
; CHECK: - .args:
; CHECK: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel71
define amdgpu_kernel void @test_kernel71(i8 addrspace(4)* addrspace(1)* %sink) #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i32 42
call void @function3(i8 addrspace(4)* %gep, i8 addrspace(4)* addrspace(1)* %sink)
ret void
}
; Ineffective pointer capture
; CHECK: - .args:
; CHECK-NOT: hidden_hostcall_buffer
; CHECK-LABEL: .name: test_kernel72
define amdgpu_kernel void @test_kernel72() #2 {
%ptr = tail call i8 addrspace(4)* @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, i8 addrspace(4)* %ptr, i32 42
store i8 addrspace(4)* %gep, i8 addrspace(4)* addrspace(1)* undef, align 8
ret void
}
attributes #0 = { "amdgpu-no-hostcall-ptr" }
attributes #1 = { nounwind readnone speculatable willreturn }
attributes #2 = { "amdgpu-implicitarg-num-bytes"="48" }
attributes #3 = { "amdgpu-implicitarg-num-bytes"="48" "amdgpu-no-hostcall-ptr" }
attributes #4 = { noinline }
|
