llvm-project/llvm/test/CodeGen/AMDGPU/ci-use-flat-for-global.ll
Matt Arsenault 296b849163 AMDGPU: Set flat_scratch from flat_scratch_init reg
This was hardcoded to the static private size, but this
would be missing the offset and additional size for someday
when we have dynamic sizing.

Also stops always initializing flat_scratch even when unused.

In the future we should stop emitting this unless flat instructions
are used to access private memory. For example this will initialize
it almost always on VI because flat is used for global access.

llvm-svn: 260658
2016-02-12 06:31:30 +00:00

27 lines
1.0 KiB
LLVM

; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=kaveri -mattr=+flat-for-global < %s | FileCheck -check-prefix=HSA -check-prefix=HSA-DEFAULT -check-prefix=ALL %s
; RUN: llc -mtriple=amdgcn--amdhsa -mcpu=kaveri -mattr=-flat-for-global < %s | FileCheck -check-prefix=HSA -check-prefix=HSA-NODEFAULT -check-prefix=ALL %s
; RUN: llc -mtriple=amdgcn-- -mcpu=kaveri -mattr=-flat-for-global < %s | FileCheck -check-prefix=NOHSA-DEFAULT -check-prefix=ALL %s
; RUN: llc -mtriple=amdgcn-- -mcpu=kaveri -mattr=+flat-for-global < %s | FileCheck -check-prefix=NOHSA-NODEFAULT -check-prefix=ALL %s
; There are no stack objects even though flat is used by default, so
; flat_scratch_init should be disabled.
; ALL-LABEL: {{^}}test:
; HSA: .amd_kernel_code_t
; HSA: enable_sgpr_flat_scratch_init = 0
; HSA: .end_amd_kernel_code_t
; ALL-NOT: flat_scr
; HSA-DEFAULT: flat_store_dword
; HSA-NODEFAULT: buffer_store_dword
; NOHSA-DEFAULT: buffer_store_dword
; NOHSA-NODEFAULT: flat_store_dword
define void @test(i32 addrspace(1)* %out) {
entry:
store i32 0, i32 addrspace(1)* %out
ret void
}