llvm-6502/test/CodeGen/R600/bfi_int.ll
Tom Stellard 83f0a5a5e8 R600: Add pattern for SHA-256 Ma function
This can be optimized using the BFI_INT instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181033 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-03 17:21:20 +00:00

53 lines
1.5 KiB
LLVM

; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck --check-prefix=R600-CHECK %s
; RUN: llc < %s -march=r600 -mcpu=SI | FileCheck --check-prefix=SI-CHECK %s
; BFI_INT Definition pattern from ISA docs
; (y & x) | (z & ~x)
;
; R600-CHECK: @bfi_def
; R600-CHECK: BFI_INT
; SI-CHECK: @bfi_def
; SI-CHECK: V_BFI_B32
define void @bfi_def(i32 addrspace(1)* %out, i32 %x, i32 %y, i32 %z) {
entry:
%0 = xor i32 %x, -1
%1 = and i32 %z, %0
%2 = and i32 %y, %x
%3 = or i32 %1, %2
store i32 %3, i32 addrspace(1)* %out
ret void
}
; SHA-256 Ch function
; z ^ (x & (y ^ z))
; R600-CHECK: @bfi_sha256_ch
; R600-CHECK: BFI_INT
; SI-CHECK: @bfi_sha256_ch
; SI-CHECK: V_BFI_B32
define void @bfi_sha256_ch(i32 addrspace(1)* %out, i32 %x, i32 %y, i32 %z) {
entry:
%0 = xor i32 %y, %z
%1 = and i32 %x, %0
%2 = xor i32 %z, %1
store i32 %2, i32 addrspace(1)* %out
ret void
}
; SHA-256 Ma function
; ((x & z) | (y & (x | z)))
; R600-CHECK: @bfi_sha256_ma
; R600-CHECK: XOR_INT * [[DST:T[0-9]+\.[XYZW]]], {{T[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; R600-CHECK: BFI_INT * {{T[0-9]+\.[XYZW]}}, {{[[DST]]|PV.x}}, {{T[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}
; SI-CHECK: V_XOR_B32_e32 [[DST:VGPR[0-9]+]], {{VGPR[0-9]+, VGPR[0-9]+}}
; SI-CHECK: V_BFI_B32 {{VGPR[0-9]+}}, [[DST]], {{VGPR[0-9]+, VGPR[0-9]+}}
define void @bfi_sha256_ma(i32 addrspace(1)* %out, i32 %x, i32 %y, i32 %z) {
entry:
%0 = and i32 %x, %z
%1 = or i32 %x, %z
%2 = and i32 %y, %1
%3 = or i32 %0, %2
store i32 %3, i32 addrspace(1)* %out
ret void
}