File: mad_int24.ll

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llvm-toolchain-3.9 1%3A3.9.1-8
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; RUN: llc < %s -march=amdgcn -verify-machineinstrs | FileCheck %s --check-prefix=SI --check-prefix=FUNC
; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s --check-prefix=SI --check-prefix=FUNC
; 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

; 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
}