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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-02-27 20:26:57 +0000 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2016-02-27 20:26:57 +0000 |
| commit | 3a61985b2fe922ee7c94c0aa148fad046347829d (patch) | |
| tree | 2c8a3a6d5e4450fb7dd03f0535f7d827a210cd4d /llvm/test/CodeGen/AMDGPU/scratch-buffer.ll | |
| parent | d6ebd07b8d1ba5fed46790e0246a2d0716c4b63b (diff) | |
| download | bcm5719-llvm-3a61985b2fe922ee7c94c0aa148fad046347829d.tar.gz bcm5719-llvm-3a61985b2fe922ee7c94c0aa148fad046347829d.zip | |
AMDGPU: More bits of frame index are known to be zero
The maximum private allocation for the whole GPU is 4G,
so the maximum possible index for a single workitem is the
maximum size divided by the smallest granularity for a dispatch.
This increases the number of known zero high bits, which
enables more offset folding. The maximum private size per
workitem with this is 128M but may be smaller still.
llvm-svn: 262153
Diffstat (limited to 'llvm/test/CodeGen/AMDGPU/scratch-buffer.ll')
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/scratch-buffer.ll | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/llvm/test/CodeGen/AMDGPU/scratch-buffer.ll b/llvm/test/CodeGen/AMDGPU/scratch-buffer.ll index d43de476605..c992eb817e5 100644 --- a/llvm/test/CodeGen/AMDGPU/scratch-buffer.ll +++ b/llvm/test/CodeGen/AMDGPU/scratch-buffer.ll @@ -1,7 +1,5 @@ -; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=SI < %s | FileCheck --check-prefix=GCN --check-prefix=DEFAULT-SCRATCH %s -; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tonga < %s | FileCheck --check-prefix=GCN --check-prefix=DEFAULT-SCRATCH %s -; RUN: llc -verify-machineinstrs -march=amdgcn -mattr=+huge-scratch-buffer -mcpu=SI < %s | FileCheck --check-prefix=GCN --check-prefix=HUGE-SCRATCH %s -; RUN: llc -verify-machineinstrs -march=amdgcn -mattr=+huge-scratch-buffer -mcpu=tonga < %s | FileCheck --check-prefix=GCN --check-prefix=HUGE-SCRATCH %s +; RUN: llc -verify-machineinstrs -march=amdgcn < %s | FileCheck -check-prefix=GCN %s +; RUN: llc -verify-machineinstrs -march=amdgcn -mcpu=tonga < %s | FileCheck -check-prefix=GCN %s ; When a frame index offset is more than 12-bits, make sure we don't store ; it in mubuf's offset field. @@ -102,8 +100,7 @@ entry: } ; GCN-LABEL: @pos_vaddr_offse -; DEFAULT-SCRATCH: buffer_store_dword v{{[0-9]+}}, v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} offen offset:16 -; HUGE-SCRATCH: buffer_store_dword v{{[0-9]+}}, v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} offen{{$}} +; GCN: buffer_store_dword v{{[0-9]+}}, v{{[0-9]+}}, s[{{[0-9]+:[0-9]+}}], s{{[0-9]+}} offen offset:16 define void @pos_vaddr_offset(i32 addrspace(1)* %out, i32 %offset) { entry: %array = alloca [8192 x i32] |
