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|
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -filetype=obj -o - < %s | llvm-readelf --notes - | FileCheck %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck --check-prefix=CHECK %s
declare void @function1()
declare void @function2() #0
; Function Attrs: noinline
define void @function3(ptr addrspace(4) %argptr, ptr addrspace(1) %sink) #2 {
store ptr addrspace(4) %argptr, ptr addrspace(1) %sink, align 8
ret void
}
; Function Attrs: noinline
define void @function4(i64 %arg, ptr %a) #2 {
store i64 %arg, ptr %a
ret void
}
; Function Attrs: noinline
define void @function5(ptr addrspace(4) %ptr, ptr %sink) #2 {
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 72
%x = load i64, ptr addrspace(4) %gep
store i64 %x, ptr %sink
ret void
}
; Function Attrs: nounwind readnone speculatable willreturn
declare align 4 ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr() #1
; CHECK: amdhsa.kernels:
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel10
define amdgpu_kernel void @test_kernel10(ptr %a) {
store i8 3, ptr %a, align 1
ret void
}
; Call to an extern function
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel20
define amdgpu_kernel void @test_kernel20(ptr %a) {
call void @function1()
store i8 3, ptr %a, align 1
ret void
}
; Explicit attribute on kernel
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel21
define amdgpu_kernel void @test_kernel21(ptr %a) #0 {
call void @function1()
store i8 3, ptr %a, align 1
ret void
}
; Explicit attribute on extern callee
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel22
define amdgpu_kernel void @test_kernel22(ptr %a) {
call void @function2()
store i8 3, ptr %a, align 1
ret void
}
; Access more bytes than the pointer size
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel30
define amdgpu_kernel void @test_kernel30(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 80
%x = load i128, ptr addrspace(4) %gep
store i128 %x, ptr %a
ret void
}
; Typical load of multigrid sync arg pointer
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel40
define amdgpu_kernel void @test_kernel40(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 88
%x = load i64, ptr addrspace(4) %gep
store i64 %x, ptr %a
ret void
}
; Typical usage, overriden by explicit attribute on kernel
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel41
define amdgpu_kernel void @test_kernel41(ptr %a) #0 {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 88
%x = load i64, ptr addrspace(4) %gep
store i64 %x, ptr %a
ret void
}
; Access to implicit arg before the multigrid sync arg pointer
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel42
define amdgpu_kernel void @test_kernel42(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 80
%x = load i64, ptr addrspace(4) %gep
store i64 %x, ptr %a
ret void
}
; Access to implicit arg after the multigrid sync arg pointer
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel43
define amdgpu_kernel void @test_kernel43(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 96
%x = load i64, ptr addrspace(4) %gep
store i64 %x, ptr %a
ret void
}
; Accessing a byte just before the multigrid sync arg pointer.
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel44
define amdgpu_kernel void @test_kernel44(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 87
%x = load i8, ptr addrspace(4) %gep, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Accessing a byte inside the multigrid sync arg pointer.
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel45
define amdgpu_kernel void @test_kernel45(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 88
%x = load i8, ptr addrspace(4) %gep, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Accessing a byte inside the multigrid sync arg pointer
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel46
define amdgpu_kernel void @test_kernel46(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 95
%x = load i8, ptr addrspace(4) %gep, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Accessing a byte just after the multigrid sync arg pointer
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel47
define amdgpu_kernel void @test_kernel47(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 96
%x = load i8, ptr addrspace(4) %gep, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Access with an unknown offset
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel50
define amdgpu_kernel void @test_kernel50(ptr %a, i32 %b) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i32 %b
%x = load i8, ptr addrspace(4) %gep, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Multiple geps reaching the multigrid sync arg pointer argument
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel51
define amdgpu_kernel void @test_kernel51(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep1 = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 16
%gep2 = getelementptr inbounds i8, ptr addrspace(4) %gep1, i64 72
%x = load i8, ptr addrspace(4) %gep2, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Multiple geps not reaching the multigrid sync arg pointer argument
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel52
define amdgpu_kernel void @test_kernel52(ptr %a) {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep1 = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 16
%gep2 = getelementptr inbounds i8, ptr addrspace(4) %gep1, i64 16
%x = load i8, ptr addrspace(4) %gep2, align 1
store i8 %x, ptr %a, align 1
ret void
}
; Multigrid sync arg pointer used inside a function call
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel60
define amdgpu_kernel void @test_kernel60(ptr %a) #2 {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 88
%x = load i64, ptr addrspace(4) %gep
call void @function4(i64 %x, ptr %a)
ret void
}
; Multigrid sync arg pointer retrieved inside a function call; chain of geps
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel61
define amdgpu_kernel void @test_kernel61(ptr %a) #2 {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i64 16
call void @function5(ptr addrspace(4) %gep, ptr %a)
ret void
}
; Pointer captured
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel70
define amdgpu_kernel void @test_kernel70(ptr addrspace(1) %sink) #2 {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i32 42
store ptr addrspace(4) %gep, ptr addrspace(1) %sink, align 8
ret void
}
; Pointer captured inside function call
; CHECK: - .args:
; CHECK: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel71
define amdgpu_kernel void @test_kernel71(ptr addrspace(1) %sink) #2 {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i32 42
call void @function3(ptr addrspace(4) %gep, ptr addrspace(1) %sink)
ret void
}
; Ineffective pointer capture
; CHECK: - .args:
; CHECK-NOT: hidden_multigrid_sync_arg
; CHECK-LABEL: .name: test_kernel72
define amdgpu_kernel void @test_kernel72() #2 {
%ptr = tail call ptr addrspace(4) @llvm.amdgcn.implicitarg.ptr()
%gep = getelementptr inbounds i8, ptr addrspace(4) %ptr, i32 42
store ptr addrspace(4) %gep, ptr addrspace(1) undef, align 8
ret void
}
attributes #0 = { "amdgpu-no-multigrid-sync-arg" }
attributes #1 = { nounwind readnone speculatable willreturn }
attributes #2 = { noinline }
!llvm.module.flags = !{!0}
!0 = !{i32 1, !"amdgpu_code_object_version", i32 500}
|
