50ad3478bd
Most tests passed with an extra argument to explicitly enable the pass. One does not, deleted it as part of this change. I can't see why the codegen would be different between default on and default off but switched on. It can be retrieved from the project history. This would be a revert, but git revert was not clean. Disabling the pass and leaving it in tree is less likely to cause breakage elsewhere than patching up the git revert conflicts on unfamiliar code. It'll be landed without review, as @hsmhsm is believed unavailable at present. Differential Revision: https://reviews.llvm.org/D104962
59 lines
2.8 KiB
LLVM
59 lines
2.8 KiB
LLVM
; RUN: opt -S -mtriple=amdgcn-- -amdgpu-replace-lds-use-with-pointer -amdgpu-enable-lds-replace-with-pointer=true < %s | FileCheck %s
|
|
|
|
; DESCRIPTION:
|
|
; There is one lds global defined here, and this lds is used within a single non-kernel
|
|
; function, as an operand of nested constant expression, and this non-kernel function is
|
|
; reachable from kernel. Hence nested constant expression should to be converted into a
|
|
; series of instructons and pointer replacement should take place. But, important note
|
|
; is - only constant expression operands which uses lds should be converted into
|
|
; instructions, other constant expression operands which do not use lds should be left
|
|
; untouched.
|
|
;
|
|
|
|
; Original LDS should exist.
|
|
; CHECK: @lds_used_within_function = internal addrspace(3) global [4 x i32] undef, align 4
|
|
@lds_used_within_function = internal addrspace(3) global [4 x i32] undef, align 4
|
|
|
|
; Non-LDS global should exist as it is.
|
|
; CHECK: @global_var = internal addrspace(1) global [4 x i32] undef, align 4
|
|
@global_var = internal addrspace(1) global [4 x i32] undef, align 4
|
|
|
|
; Pointer should be created.
|
|
; CHECK: @lds_used_within_function.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2
|
|
|
|
; Pointer replacement code should be added.
|
|
define internal void @function() {
|
|
; CHECK-LABEL: entry:
|
|
; CHECK: %0 = load i16, i16 addrspace(3)* @lds_used_within_function.ptr, align 2
|
|
; CHECK: %1 = getelementptr i8, i8 addrspace(3)* null, i16 %0
|
|
; CHECK: %2 = bitcast i8 addrspace(3)* %1 to [4 x i32] addrspace(3)*
|
|
; CHECK: %3 = getelementptr inbounds [4 x i32], [4 x i32] addrspace(3)* %2, i32 0, i32 2
|
|
; CHECK: %4 = addrspacecast i32 addrspace(3)* %3 to i32*
|
|
; CHECK: %5 = ptrtoint i32* %4 to i32
|
|
; CHECK: %6 = add i32 %5, ptrtoint (i32 addrspace(1)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(1)* @global_var, i32 0, i32 2) to i32)
|
|
; CHECK: ret void
|
|
entry:
|
|
%0 = add i32 ptrtoint (i32* addrspacecast (i32 addrspace(3)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(3)* @lds_used_within_function, i32 0, i32 2) to i32*) to i32), ptrtoint (i32 addrspace(1)* getelementptr inbounds ([4 x i32], [4 x i32] addrspace(1)* @global_var, i32 0, i32 2) to i32)
|
|
ret void
|
|
}
|
|
|
|
; Pointer initialization code shoud be added
|
|
define protected amdgpu_kernel void @kernel() {
|
|
; CHECK-LABEL: entry:
|
|
; CHECK: %0 = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
|
|
; CHECK: %1 = icmp eq i32 %0, 0
|
|
; CHECK: br i1 %1, label %2, label %3
|
|
;
|
|
; CHECK-LABEL: 2:
|
|
; CHECK: store i16 ptrtoint ([4 x i32] addrspace(3)* @lds_used_within_function to i16), i16 addrspace(3)* @lds_used_within_function.ptr, align 2
|
|
; CHECK: br label %3
|
|
;
|
|
; CHECK-LABEL: 3:
|
|
; CHECK: call void @llvm.amdgcn.wave.barrier()
|
|
; CHECK: call void @function()
|
|
; CHECK: ret void
|
|
entry:
|
|
call void @function()
|
|
ret void
|
|
}
|