AMDGPU: Enable FeatureFlatForGlobal on Volcanic Islands
Accomplishes what r292982 was supposed to, which ended up
only really making the necessary test changes.
This should be applied to the 4.0 branch.
Patch by Vedran Miletić <vedran@miletic.net>
llvm-svn: 293310
diff --git a/llvm/test/CodeGen/AMDGPU/flat-for-global-subtarget-feature.ll b/llvm/test/CodeGen/AMDGPU/flat-for-global-subtarget-feature.ll
new file mode 100644
index 0000000..df9ba00
--- /dev/null
+++ b/llvm/test/CodeGen/AMDGPU/flat-for-global-subtarget-feature.ll
@@ -0,0 +1,54 @@
+; 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=tonga < %s | FileCheck -check-prefix=HSA-NOADDR64 -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
+; RUN: llc -mtriple=amdgcn-- -mcpu=tonga < %s | FileCheck -check-prefix=NOHSA-NOADDR64 -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
+; HSA-NOADDR64: flat_store_dword
+
+; NOHSA-DEFAULT: buffer_store_dword
+; NOHSA-NODEFAULT: flat_store_dword
+; NOHSA-NOADDR64: flat_store_dword
+define void @test(i32 addrspace(1)* %out) {
+entry:
+ store i32 0, i32 addrspace(1)* %out
+ ret void
+}
+
+; HSA-DEFAULT: flat_store_dword
+; HSA-NODEFAULT: buffer_store_dword
+; HSA-NOADDR64: flat_store_dword
+
+; NOHSA-DEFAULT: buffer_store_dword
+; NOHSA-NODEFAULT: flat_store_dword
+; NOHSA-NOADDR64: flat_store_dword
+define void @test_addr64(i32 addrspace(1)* %out) {
+entry:
+ %out.addr = alloca i32 addrspace(1)*, align 4
+
+ store i32 addrspace(1)* %out, i32 addrspace(1)** %out.addr, align 4
+ %ld0 = load i32 addrspace(1)*, i32 addrspace(1)** %out.addr, align 4
+
+ %arrayidx = getelementptr inbounds i32, i32 addrspace(1)* %ld0, i32 0
+ store i32 1, i32 addrspace(1)* %arrayidx, align 4
+
+ %ld1 = load i32 addrspace(1)*, i32 addrspace(1)** %out.addr, align 4
+ %arrayidx1 = getelementptr inbounds i32, i32 addrspace(1)* %ld1, i32 1
+ store i32 2, i32 addrspace(1)* %arrayidx1, align 4
+
+ ret void
+}