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authorDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
committerDimitry Andric <dim@FreeBSD.org>2019-12-20 19:53:05 +0000
commit0b57cec536236d46e3dba9bd041533462f33dbb7 (patch)
tree56229dbdbbf76d18580f72f789003db17246c8d9 /contrib/llvm/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp
parent718ef55ec7785aae63f98f8ca05dc07ed399c16d (diff)
Notes
Diffstat (limited to 'contrib/llvm/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp')
-rw-r--r--contrib/llvm/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp65
1 files changed, 0 insertions, 65 deletions
diff --git a/contrib/llvm/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp b/contrib/llvm/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp
deleted file mode 100644
index e80797736363..000000000000
--- a/contrib/llvm/lib/Target/AMDGPU/AMDGPUFrameLowering.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-//===----------------------- AMDGPUFrameLowering.cpp ----------------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//==-----------------------------------------------------------------------===//
-//
-// Interface to describe a layout of a stack frame on a AMDGPU target machine.
-//
-//===----------------------------------------------------------------------===//
-
-#include "AMDGPUFrameLowering.h"
-
-using namespace llvm;
-AMDGPUFrameLowering::AMDGPUFrameLowering(StackDirection D, unsigned StackAl,
- int LAO, unsigned TransAl)
- : TargetFrameLowering(D, StackAl, LAO, TransAl) { }
-
-AMDGPUFrameLowering::~AMDGPUFrameLowering() = default;
-
-unsigned AMDGPUFrameLowering::getStackWidth(const MachineFunction &MF) const {
- // XXX: Hardcoding to 1 for now.
- //
- // I think the StackWidth should stored as metadata associated with the
- // MachineFunction. This metadata can either be added by a frontend, or
- // calculated by a R600 specific LLVM IR pass.
- //
- // The StackWidth determines how stack objects are laid out in memory.
- // For a vector stack variable, like: int4 stack[2], the data will be stored
- // in the following ways depending on the StackWidth.
- //
- // StackWidth = 1:
- //
- // T0.X = stack[0].x
- // T1.X = stack[0].y
- // T2.X = stack[0].z
- // T3.X = stack[0].w
- // T4.X = stack[1].x
- // T5.X = stack[1].y
- // T6.X = stack[1].z
- // T7.X = stack[1].w
- //
- // StackWidth = 2:
- //
- // T0.X = stack[0].x
- // T0.Y = stack[0].y
- // T1.X = stack[0].z
- // T1.Y = stack[0].w
- // T2.X = stack[1].x
- // T2.Y = stack[1].y
- // T3.X = stack[1].z
- // T3.Y = stack[1].w
- //
- // StackWidth = 4:
- // T0.X = stack[0].x
- // T0.Y = stack[0].y
- // T0.Z = stack[0].z
- // T0.W = stack[0].w
- // T1.X = stack[1].x
- // T1.Y = stack[1].y
- // T1.Z = stack[1].z
- // T1.W = stack[1].w
- return 1;
-}