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2 Commits

Author SHA1 Message Date
Farhana Aleen 59ee2c5362 [AMDGPU] Removed the unnecessary operand size-check-assert from processBaseWithConstOffset(). 
Summary: 32bit operand sizes are guaranteed by the opcode check AMDGPU::V_ADD_I32_e64 and
         AMDGPU::V_ADDC_U32_e64. Therefore, we don't any additional operand size-check-assert.

Author: FarhanaAleen
llvm-svn: 349529
 2018-12-18 19:58:39 +00:00
Farhana Aleen ce095c564a [AMDGPU] Promote constant offset to the immediate by finding a new base with 13bit constant offset from the nearby instructions. 
Summary: Promote constant offset to immediate by recomputing the relative 13bit offset from nearby instructions.
 E.g.
  s_movk_i32 s0, 0x1800
  v_add_co_u32_e32 v0, vcc, s0, v2
  v_addc_co_u32_e32 v1, vcc, 0, v6, vcc

  s_movk_i32 s0, 0x1000
  v_add_co_u32_e32 v5, vcc, s0, v2
  v_addc_co_u32_e32 v6, vcc, 0, v6, vcc
  global_load_dwordx2 v[5:6], v[5:6], off
  global_load_dwordx2 v[0:1], v[0:1], off
  =>
  s_movk_i32 s0, 0x1000
  v_add_co_u32_e32 v5, vcc, s0, v2
  v_addc_co_u32_e32 v6, vcc, 0, v6, vcc
  global_load_dwordx2 v[5:6], v[5:6], off
  global_load_dwordx2 v[0:1], v[5:6], off offset:2048

Author: FarhanaAleen

Reviewed By: arsenm, rampitec

Subscribers: llvm-commits, AMDGPU

Differential Revision: https://reviews.llvm.org/D55539

llvm-svn: 349196
 2018-12-14 21:13:14 +00:00