2a0e4d1c01
- In general, a generic point may alias to pointers in all other address
spaces. However, for certain cases enforced by the programming model,
we may found a generic point won't alias to pointers to local objects.
* When a generic pointer is loaded from the constant address space, it
could only be a pointer to the GLOBAL or CONSTANT address space.
Thus, it won't alias to pointers to the PRIVATE or LOCAL address
space.
* When a generic pointer is passed as a kernel argument, it also could
only be a pointer to the GLOBAL or CONSTANT address space. Thus, it
also won't alias to pointers to the PRIVATE or LOCAL address space.
Differential Revision: https://reviews.llvm.org/D89525
186 lines
5.6 KiB
LLVM
186 lines
5.6 KiB
LLVM
; RUN: opt -mtriple=amdgcn-- -data-layout=A5 -aa-eval -amdgpu-aa -amdgpu-aa-wrapper -disable-basic-aa -print-all-alias-modref-info -disable-output < %s 2>&1 | FileCheck %s
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; RUN: opt -mtriple=r600-- -data-layout=A5 -aa-eval -amdgpu-aa -amdgpu-aa-wrapper -disable-basic-aa -print-all-alias-modref-info -disable-output < %s 2>&1 | FileCheck %s
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; CHECK: NoAlias: i8 addrspace(1)* %p1, i8 addrspace(5)* %p
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define void @test(i8 addrspace(5)* %p, i8 addrspace(1)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(1)* %p1, i8 addrspace(4)* %p
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define void @test_constant_vs_global(i8 addrspace(4)* %p, i8 addrspace(1)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(1)* %p, i8 addrspace(4)* %p1
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define void @test_global_vs_constant(i8 addrspace(1)* %p, i8 addrspace(4)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(1)* %p1, i8 addrspace(6)* %p
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define void @test_constant_32bit_vs_global(i8 addrspace(6)* %p, i8 addrspace(1)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(4)* %p1, i8 addrspace(6)* %p
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define void @test_constant_32bit_vs_constant(i8 addrspace(6)* %p, i8 addrspace(4)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(999)* %p0, i8* %p
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define void @test_0_999(i8 addrspace(0)* %p, i8 addrspace(999)* %p0) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(999)* %p, i8* %p1
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define void @test_999_0(i8 addrspace(999)* %p, i8 addrspace(0)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(1)* %p, i8 addrspace(999)* %p1
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define void @test_1_999(i8 addrspace(1)* %p, i8 addrspace(999)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(1)* %p1, i8 addrspace(999)* %p
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define void @test_999_1(i8 addrspace(999)* %p, i8 addrspace(1)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(2)* %p, i8* %p1
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define void @test_region_vs_flat(i8 addrspace(2)* %p, i8 addrspace(0)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(1)* %p1, i8 addrspace(2)* %p
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define void @test_region_vs_global(i8 addrspace(2)* %p, i8 addrspace(1)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(2)* %p, i8 addrspace(2)* %p1
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define void @test_region(i8 addrspace(2)* %p, i8 addrspace(2)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(2)* %p, i8 addrspace(3)* %p1
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define void @test_region_vs_group(i8 addrspace(2)* %p, i8 addrspace(3)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(2)* %p, i8 addrspace(4)* %p1
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define void @test_region_vs_constant(i8 addrspace(2)* %p, i8 addrspace(4)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(2)* %p, i8 addrspace(5)* %p1
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define void @test_region_vs_private(i8 addrspace(2)* %p, i8 addrspace(5)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(2)* %p, i8 addrspace(6)* %p1
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define void @test_region_vs_const32(i8 addrspace(2)* %p, i8 addrspace(6)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(7)* %p, i8* %p1
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define void @test_7_0(i8 addrspace(7)* %p, i8 addrspace(0)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(1)* %p1, i8 addrspace(7)* %p
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define void @test_7_1(i8 addrspace(7)* %p, i8 addrspace(1)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(2)* %p1, i8 addrspace(7)* %p
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define void @test_7_2(i8 addrspace(7)* %p, i8 addrspace(2)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(3)* %p1, i8 addrspace(7)* %p
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define void @test_7_3(i8 addrspace(7)* %p, i8 addrspace(3)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(4)* %p1, i8 addrspace(7)* %p
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define void @test_7_4(i8 addrspace(7)* %p, i8 addrspace(4)* %p1) {
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ret void
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}
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; CHECK: NoAlias: i8 addrspace(5)* %p1, i8 addrspace(7)* %p
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define void @test_7_5(i8 addrspace(7)* %p, i8 addrspace(5)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(6)* %p1, i8 addrspace(7)* %p
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define void @test_7_6(i8 addrspace(7)* %p, i8 addrspace(6)* %p1) {
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ret void
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}
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; CHECK: MayAlias: i8 addrspace(7)* %p, i8 addrspace(7)* %p1
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define void @test_7_7(i8 addrspace(7)* %p, i8 addrspace(7)* %p1) {
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ret void
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}
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@cst = internal addrspace(4) global i8* undef, align 4
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; CHECK-LABEL: Function: test_8_0
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; CHECK: NoAlias: i8 addrspace(3)* %p, i8* %p1
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; CHECK: NoAlias: i8 addrspace(3)* %p, i8* addrspace(4)* @cst
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; CHECK: MayAlias: i8* %p1, i8* addrspace(4)* @cst
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define void @test_8_0(i8 addrspace(3)* %p) {
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%p1 = load i8*, i8* addrspace(4)* @cst
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ret void
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}
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; CHECK-LABEL: Function: test_8_1
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; CHECK: NoAlias: i8 addrspace(5)* %p, i8* %p1
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; CHECK: NoAlias: i8 addrspace(5)* %p, i8* addrspace(4)* @cst
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; CHECK: MayAlias: i8* %p1, i8* addrspace(4)* @cst
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define void @test_8_1(i8 addrspace(5)* %p) {
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%p1 = load i8*, i8* addrspace(4)* @cst
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ret void
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}
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; CHECK-LABEL: Function: test_8_2
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; CHECK: NoAlias: i8 addrspace(5)* %p1, i8* %p
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define amdgpu_kernel void @test_8_2(i8* %p) {
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%p1 = alloca i8, align 1, addrspace(5)
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ret void
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}
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; CHECK-LABEL: Function: test_8_3
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; CHECK: MayAlias: i8 addrspace(5)* %p1, i8* %p
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; TODO: So far, %p1 may still alias to %p. As it's not captured at all, it
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; should be NoAlias.
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define void @test_8_3(i8* %p) {
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%p1 = alloca i8, align 1, addrspace(5)
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ret void
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}
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@shm = internal addrspace(3) global i8 undef, align 4
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; CHECK-LABEL: Function: test_8_4
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; CHECK: NoAlias: i8 addrspace(3)* %p1, i8* %p
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; CHECK: NoAlias: i8 addrspace(3)* @shm, i8* %p
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; CHECK: MayAlias: i8 addrspace(3)* %p1, i8 addrspace(3)* @shm
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define amdgpu_kernel void @test_8_4(i8* %p) {
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%p1 = getelementptr i8, i8 addrspace(3)* @shm, i32 0
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ret void
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}
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; CHECK-LABEL: Function: test_8_5
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; CHECK: MayAlias: i8 addrspace(3)* %p1, i8* %p
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; CHECK: MayAlias: i8 addrspace(3)* @shm, i8* %p
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; CHECK: MayAlias: i8 addrspace(3)* %p1, i8 addrspace(3)* @shm
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; TODO: So far, %p1 may still alias to %p. As it's not captured at all, it
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; should be NoAlias.
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define void @test_8_5(i8* %p) {
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%p1 = getelementptr i8, i8 addrspace(3)* @shm, i32 0
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ret void
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}
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