test/MC/AMDGPU/gfx10-constant-bus.s

   1 // RUN: not llvm-mc -arch=amdgcn -mcpu=gfx1010 -show-encoding %s 2>&1 | FileCheck -check-prefix=GFX10 %s
   2 // RUN: not llvm-mc -arch=amdgcn -mcpu=gfx1010 -show-encoding %s 2>&1 | FileCheck -check-prefix=GFX10-ERR %s
   3
   4 //-----------------------------------------------------------------------------------------
   5 // On GFX10 we can use two scalar operands (except for 64-bit shift instructions)
   6
   7 v_add_f32 v0, s0, s1
   8 // GFX10: v_add_f32_e64 v0, s0, s1        ; encoding: [0x00,0x00,0x03,0xd5,0x00,0x02,0x00,0x00]
   9
  10 v_madak_f32 v0, s0, v1, 42.42
  11 // GFX10: v_madak_f32 v0, s0, v1, 0x4229ae14 ; encoding: [0x00,0x02,0x00,0x42,0x14,0xae,0x29,0x42]
  12
  13 v_med3_f32 v0, s0, s0, s1
  14 // GFX10: v_med3_f32 v0, s0, s0, s1       ; encoding: [0x00,0x00,0x57,0xd5,0x00,0x00,0x04,0x00]
  15
  16 //-----------------------------------------------------------------------------------------
  17 // 64-bit shift instructions can use only one scalar value input
  18
  19 v_ashrrev_i64 v[0:1], 0x100, s[0:1]
  20 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  21
  22 v_ashrrev_i64 v[0:1], s2, s[0:1]
  23 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  24
  25 //-----------------------------------------------------------------------------------------
  26 // v_div_fmas implicitly reads VCC, so only one scalar operand is possible
  27
  28 v_div_fmas_f32 v5, s3, s3, s3
  29 // GFX10: v_div_fmas_f32 v5, s3, s3, s3   ; encoding: [0x05,0x00,0x6f,0xd5,0x03,0x06,0x0c,0x00]
  30
  31 v_div_fmas_f32 v5, s3, s3, s2
  32 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  33
  34 v_div_fmas_f32 v5, s3, 0x123, v3
  35 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  36
  37 v_div_fmas_f64 v[5:6], 0x12345678, 0x12345678, 0x12345678
  38 // GFX10: v_div_fmas_f64 v[5:6], 0x12345678, 0x12345678, 0x12345678 ; encoding: [0x05,0x00,0x70,0xd5,0xff,0xfe,0xfd,0x03,0x78,0x56,0x34,0x12]
  39
  40 v_div_fmas_f64 v[5:6], v[1:2], s[2:3], v[3:4]
  41 // GFX10: v_div_fmas_f64 v[5:6], v[1:2], s[2:3], v[3:4] ; encoding: [0x05,0x00,0x70,0xd5,0x01,0x05,0x0c,0x04]
  42
  43 v_div_fmas_f64 v[5:6], v[1:2], s[2:3], 0x123456
  44 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  45
  46 //-----------------------------------------------------------------------------------------
  47 // v_mad_u64_u32 has operands of different sizes.
  48 // When these operands are literals, they are counted as 2 scalar values even if literals are identical.
  49
  50 v_lshlrev_b64 v[5:6], 0x3f717273, 0x3f717273
  51 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  52
  53 v_mad_u64_u32 v[5:6], s12, v1, 0x12345678, 0x12345678
  54 // GFX10: v_mad_u64_u32 v[5:6], s12, v1, 0x12345678, 0x12345678 ; encoding: [0x05,0x0c,0x76,0xd5,0x01,0xff,0xfd,0x03,0x78,0x56,0x34,0x12]
  55
  56 v_mad_u64_u32 v[5:6], s12, s1, 0x12345678, 0x12345678
  57 // GFX10-ERR: error: invalid operand (violates constant bus restrictions)
  58
  59 //-----------------------------------------------------------------------------------------
  60 // null is free
  61
  62 v_bfe_u32 v5, s1, s2, null
  63 // GFX10: v_bfe_u32 v5, s1, s2, null      ; encoding: [0x05,0x00,0x48,0xd5,0x01,0x04,0xf4,0x01]