llvm-project/llvm/test/CodeGen/R600/mad_int24.ll

24 lines
788 B
LLVM

; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=EG --check-prefix=FUNC
; RUN: llc < %s -march=r600 -mcpu=cayman | FileCheck %s --check-prefix=CM --check-prefix=FUNC
; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s --check-prefix=SI --check-prefix=FUNC
; FUNC-LABEL: @i32_mad24
; Signed 24-bit multiply is not supported on pre-Cayman GPUs.
; EG: MULLO_INT
; Make sure we aren't masking the inputs.
; CM-NOT: AND
; CM: MULADD_INT24
; SI-NOT: AND
; SI: V_MAD_I32_I24
define void @i32_mad24(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c) {
entry:
%0 = shl i32 %a, 8
%a_24 = ashr i32 %0, 8
%1 = shl i32 %b, 8
%b_24 = ashr i32 %1, 8
%2 = mul i32 %a_24, %b_24
%3 = add i32 %2, %c
store i32 %3, i32 addrspace(1)* %out
ret void
}