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https://github.com/c64scene-ar/llvm-6502.git
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68e9ebbe44
There are no variable values like registers encoded in the low 32 bits of MUBUF instructions, so it is relatively easy to check these bits, and it will help prevent us from introducing encoding bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215397 91177308-0d34-0410-b5e6-96231b3b80d8
99 lines
3.8 KiB
LLVM
99 lines
3.8 KiB
LLVM
; RUN: llc -march=r600 -mcpu=SI -show-mc-encoding -verify-machineinstrs < %s | FileCheck %s
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;;;==========================================================================;;;
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;;; MUBUF LOAD TESTS
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;;;==========================================================================;;;
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; MUBUF load with an immediate byte offset that fits into 12-bits
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; CHECK-LABEL: @mubuf_load0
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; CHECK: BUFFER_LOAD_DWORD v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 offset:0x4 ; encoding: [0x04,0x80,0x30,0xe0
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define void @mubuf_load0(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
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entry:
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%0 = getelementptr i32 addrspace(1)* %in, i64 1
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%1 = load i32 addrspace(1)* %0
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store i32 %1, i32 addrspace(1)* %out
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ret void
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}
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; MUBUF load with the largest possible immediate offset
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; CHECK-LABEL: @mubuf_load1
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; CHECK: BUFFER_LOAD_UBYTE v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 offset:0xfff ; encoding: [0xff,0x8f,0x20,0xe0
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define void @mubuf_load1(i8 addrspace(1)* %out, i8 addrspace(1)* %in) {
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entry:
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%0 = getelementptr i8 addrspace(1)* %in, i64 4095
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%1 = load i8 addrspace(1)* %0
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store i8 %1, i8 addrspace(1)* %out
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ret void
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}
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; MUBUF load with an immediate byte offset that doesn't fit into 12-bits
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; CHECK-LABEL: @mubuf_load2
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; CHECK: BUFFER_LOAD_DWORD v{{[0-9]}}, v[{{[0-9]+:[0-9]+}}], s[{{[0-9]+:[0-9]+}}], 0 addr64 ; encoding: [0x00,0x80
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define void @mubuf_load2(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
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entry:
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%0 = getelementptr i32 addrspace(1)* %in, i64 1024
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%1 = load i32 addrspace(1)* %0
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store i32 %1, i32 addrspace(1)* %out
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ret void
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}
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; MUBUF load with a 12-bit immediate offset and a register offset
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; CHECK-LABEL: @mubuf_load3
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; CHECK-NOT: ADD
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; CHECK: BUFFER_LOAD_DWORD v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 offset:0x4 ; encoding: [0x04,0x80,0x30,0xe0
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define void @mubuf_load3(i32 addrspace(1)* %out, i32 addrspace(1)* %in, i64 %offset) {
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entry:
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%0 = getelementptr i32 addrspace(1)* %in, i64 %offset
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%1 = getelementptr i32 addrspace(1)* %0, i64 1
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%2 = load i32 addrspace(1)* %1
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store i32 %2, i32 addrspace(1)* %out
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ret void
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}
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;;;==========================================================================;;;
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;;; MUBUF STORE TESTS
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;;;==========================================================================;;;
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; MUBUF store with an immediate byte offset that fits into 12-bits
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; CHECK-LABEL: @mubuf_store0
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; CHECK: BUFFER_STORE_DWORD v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 offset:0x4 ; encoding: [0x04,0x80,0x70,0xe0
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define void @mubuf_store0(i32 addrspace(1)* %out) {
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entry:
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%0 = getelementptr i32 addrspace(1)* %out, i64 1
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store i32 0, i32 addrspace(1)* %0
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ret void
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}
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; MUBUF store with the largest possible immediate offset
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; CHECK-LABEL: @mubuf_store1
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; CHECK: BUFFER_STORE_BYTE v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 offset:0xfff ; encoding: [0xff,0x8f,0x60,0xe0
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define void @mubuf_store1(i8 addrspace(1)* %out) {
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entry:
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%0 = getelementptr i8 addrspace(1)* %out, i64 4095
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store i8 0, i8 addrspace(1)* %0
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ret void
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}
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; MUBUF store with an immediate byte offset that doesn't fit into 12-bits
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; CHECK-LABEL: @mubuf_store2
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; CHECK: BUFFER_STORE_DWORD v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 ; encoding: [0x00,0x80,0x70,0xe0
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define void @mubuf_store2(i32 addrspace(1)* %out) {
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entry:
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%0 = getelementptr i32 addrspace(1)* %out, i64 1024
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store i32 0, i32 addrspace(1)* %0
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ret void
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}
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; MUBUF store with a 12-bit immediate offset and a register offset
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; CHECK-LABEL: @mubuf_store3
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; CHECK-NOT: ADD
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; CHECK: BUFFER_STORE_DWORD v{{[0-9]}}, v[{{[0-9]:[0-9]}}], s[{{[0-9]:[0-9]}}], 0 addr64 offset:0x4 ; encoding: [0x04,0x80,0x70,0xe0
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define void @mubuf_store3(i32 addrspace(1)* %out, i64 %offset) {
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entry:
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%0 = getelementptr i32 addrspace(1)* %out, i64 %offset
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%1 = getelementptr i32 addrspace(1)* %0, i64 1
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store i32 0, i32 addrspace(1)* %1
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ret void
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}
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