67 lines
3.1 KiB
LLVM
67 lines
3.1 KiB
LLVM
; RUN: opt -S -mtriple=amdgcn-- -amdgpu-replace-lds-use-with-pointer -amdgpu-enable-lds-replace-with-pointer=true < %s | FileCheck %s
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; DESCRIPTION:
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;
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; There are three lds globals defined here, and these three lds are used within a single
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; non-kernel function, and this non-kernel function is reachable from kernel. Hence pointer
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; replacement is required for all three lds globals.
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;
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; Original LDS should exist.
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; CHECK: @lds1 = internal addrspace(3) global [1 x i32] undef, align 4
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; CHECK: @lds2 = internal addrspace(3) global [2 x i32] undef, align 4
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; CHECK: @lds3 = internal addrspace(3) global [3 x i32] undef, align 4
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@lds1 = internal addrspace(3) global [1 x i32] undef, align 4
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@lds2 = internal addrspace(3) global [2 x i32] undef, align 4
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@lds3 = internal addrspace(3) global [3 x i32] undef, align 4
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; Pointers should be created.
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; CHECK: @lds1.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2
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; CHECK: @lds2.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2
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; CHECK: @lds3.ptr = internal unnamed_addr addrspace(3) global i16 undef, align 2
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; Pointer replacement code should be added.
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define internal void @function() {
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; CHECK-LABEL: entry:
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; CHECK: %0 = load i16, i16 addrspace(3)* @lds3.ptr, align 2
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; CHECK: %1 = getelementptr i8, i8 addrspace(3)* null, i16 %0
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; CHECK: %2 = bitcast i8 addrspace(3)* %1 to [3 x i32] addrspace(3)*
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; CHECK: %3 = load i16, i16 addrspace(3)* @lds2.ptr, align 2
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; CHECK: %4 = getelementptr i8, i8 addrspace(3)* null, i16 %3
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; CHECK: %5 = bitcast i8 addrspace(3)* %4 to [2 x i32] addrspace(3)*
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; CHECK: %6 = load i16, i16 addrspace(3)* @lds1.ptr, align 2
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; CHECK: %7 = getelementptr i8, i8 addrspace(3)* null, i16 %6
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; CHECK: %8 = bitcast i8 addrspace(3)* %7 to [1 x i32] addrspace(3)*
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; CHECK: %gep1 = getelementptr inbounds [1 x i32], [1 x i32] addrspace(3)* %8, i32 0, i32 0
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; CHECK: %gep2 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(3)* %5, i32 0, i32 0
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; CHECK: %gep3 = getelementptr inbounds [3 x i32], [3 x i32] addrspace(3)* %2, i32 0, i32 0
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; CHECK: ret void
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entry:
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%gep1 = getelementptr inbounds [1 x i32], [1 x i32] addrspace(3)* @lds1, i32 0, i32 0
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%gep2 = getelementptr inbounds [2 x i32], [2 x i32] addrspace(3)* @lds2, i32 0, i32 0
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%gep3 = getelementptr inbounds [3 x i32], [3 x i32] addrspace(3)* @lds3, i32 0, i32 0
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ret void
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}
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; Pointer initialization code shoud be added;
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define protected amdgpu_kernel void @kernel() {
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; CHECK-LABEL: entry:
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; CHECK: %0 = call i32 @llvm.amdgcn.mbcnt.lo(i32 -1, i32 0)
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; CHECK: %1 = icmp eq i32 %0, 0
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; CHECK: br i1 %1, label %2, label %3
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;
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; CHECK-LABEL: 2:
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; CHECK: store i16 ptrtoint ([3 x i32] addrspace(3)* @lds3 to i16), i16 addrspace(3)* @lds3.ptr, align 2
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; CHECK: store i16 ptrtoint ([2 x i32] addrspace(3)* @lds2 to i16), i16 addrspace(3)* @lds2.ptr, align 2
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; CHECK: store i16 ptrtoint ([1 x i32] addrspace(3)* @lds1 to i16), i16 addrspace(3)* @lds1.ptr, align 2
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; CHECK: br label %3
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;
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; CHECK-LABEL: 3:
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; CHECK: call void @llvm.amdgcn.wave.barrier()
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; CHECK: call void @function()
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; CHECK: ret void
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entry:
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call void @function()
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ret void
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}
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