AMDGPU: Fix alignments in test

[arsenm]

Summary

I don't think this test was intending to test unaligned load/store.
Change it to use the natural alignment to avoid regressing.

Also adds missing SI checks.

[• tstellarAMD]

LGTM.

[arsenm]

r261571

test/CodeGen/AMDGPU/extload.ll

-; RUN: llc -march=r600 -mcpu=cypress < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
-; RUN: llc -march=amdgcn -mcpu=SI -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
 ; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs< %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
+; RUN: llc -march=r600 -mcpu=cypress < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s
 
 ; FUNC-LABEL: {{^}}anyext_load_i8:
+; SI: buffer_load_dword v{{[0-9]+}}
+; SI: buffer_store_dword v{{[0-9]+}}
+
 ; EG: MEM_RAT_CACHELESS STORE_RAW [[VAL:T[0-9]+.[XYZW]]],
 ; EG: VTX_READ_32 [[VAL]]
-
 define void @anyext_load_i8(i8 addrspace(1)* nocapture noalias %out, i8 addrspace(1)* nocapture noalias %src) nounwind {
   %cast = bitcast i8 addrspace(1)* %src to i32 addrspace(1)*
-  %load = load i32, i32 addrspace(1)* %cast, align 1
+  %load = load i32, i32 addrspace(1)* %cast
   %x = bitcast i32 %load to <4 x i8>
   %castOut = bitcast i8 addrspace(1)* %out to <4 x i8> addrspace(1)*
-  store <4 x i8> %x, <4 x i8> addrspace(1)* %castOut, align 1
+  store <4 x i8> %x, <4 x i8> addrspace(1)* %castOut
   ret void
 }
 
 ; FUNC-LABEL: {{^}}anyext_load_i16:
+; SI: buffer_load_dword v{{[0-9]+}}
+; SI: buffer_store_dword v{{[0-9]+}}
+
 ; EG: MEM_RAT_CACHELESS STORE_RAW [[VAL:T[0-9]+.[XYZW]]],
 ; EG: VTX_READ_32 [[VAL]]
-
 define void @anyext_load_i16(i16 addrspace(1)* nocapture noalias %out, i16 addrspace(1)* nocapture noalias %src) nounwind {
   %cast = bitcast i16 addrspace(1)* %src to i32 addrspace(1)*
-  %load = load i32, i32 addrspace(1)* %cast, align 1
+  %load = load i32, i32 addrspace(1)* %cast
   %x = bitcast i32 %load to <2 x i16>
   %castOut = bitcast i16 addrspace(1)* %out to <2 x i16> addrspace(1)*
-  store <2 x i16> %x, <2 x i16> addrspace(1)* %castOut, align 1
+  store <2 x i16> %x, <2 x i16> addrspace(1)* %castOut
   ret void
 }
 
 ; FUNC-LABEL: {{^}}anyext_load_lds_i8:
+; SI: ds_read_b32 v{{[0-9]+}}
+; SI: ds_write_b32 v{{[0-9]+}}
+
 ; EG: LDS_READ_RET {{.*}}, [[VAL:T[0-9]+.[XYZW]]]
 ; EG: LDS_WRITE * [[VAL]]
 define void @anyext_load_lds_i8(i8 addrspace(3)* nocapture noalias %out, i8 addrspace(3)* nocapture noalias %src) nounwind {
   %cast = bitcast i8 addrspace(3)* %src to i32 addrspace(3)*
-  %load = load i32, i32 addrspace(3)* %cast, align 1
+  %load = load i32, i32 addrspace(3)* %cast
   %x = bitcast i32 %load to <4 x i8>
   %castOut = bitcast i8 addrspace(3)* %out to <4 x i8> addrspace(3)*
-  store <4 x i8> %x, <4 x i8> addrspace(3)* %castOut, align 1
+  store <4 x i8> %x, <4 x i8> addrspace(3)* %castOut
   ret void
 }
 
 ; FUNC-LABEL: {{^}}anyext_load_lds_i16:
+; SI: ds_read_b32 v{{[0-9]+}}
+; SI: ds_write_b32 v{{[0-9]+}}
+
 ; EG: LDS_READ_RET {{.*}}, [[VAL:T[0-9]+.[XYZW]]]
 ; EG: LDS_WRITE * [[VAL]]
 define void @anyext_load_lds_i16(i16 addrspace(3)* nocapture noalias %out, i16 addrspace(3)* nocapture noalias %src) nounwind {
   %cast = bitcast i16 addrspace(3)* %src to i32 addrspace(3)*
-  %load = load i32, i32 addrspace(3)* %cast, align 1
+  %load = load i32, i32 addrspace(3)* %cast
   %x = bitcast i32 %load to <2 x i16>
   %castOut = bitcast i16 addrspace(3)* %out to <2 x i16> addrspace(3)*
-  store <2 x i16> %x, <2 x i16> addrspace(3)* %castOut, align 1
+  store <2 x i16> %x, <2 x i16> addrspace(3)* %castOut
   ret void
 }