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llvm-mirror/test/CodeGen/AMDGPU/fold-fi-operand-shrink.mir
Matt Arsenault 6705a324ed AMDGPU: Rename add/sub with carry out instructions
The hardware has created a real mess in the naming for add/sub, which
have been renamed basically every generation. Switch the carry out
pseudos to have the gfx9/gfx10 names. We were using the original SI/CI
v_add_i32/v_sub_i32 names. Later targets reintroduced these names as
carryless instructions with a saturating clamp bit, which we do not
define. Do this rename so we can unambiguously add these missing
instructions.

The carry-in versions should also be renamed, but at least those had a
consistent _u32 name to begin with. The 16-bit instructions were also
renamed, but aren't ambiguous.

This does regress assembler error message quality in some cases. In
mismatched wave32/wave64 situations, this will switch from
"unsupported instruction" to "invalid operand", with the error
pointing at the wrong position. I couldn't quite follow how the
assembler selects these, but the previous behavior seemed accidental
to me. It looked like there was a partial attempt to handle this which
was never completed (i.e. there is an AMDGPUOperand::isBoolReg but it
isn't used for anything).
2020-07-16 13:16:30 -04:00

231 lines
8.6 KiB
YAML

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass si-fold-operands,dead-mi-elimination %s -o - | FileCheck -check-prefix=GCN %s
---
# First operand is FI is in a VGPR, other operand is a VGPR
name: shrink_vgpr_fi_vgpr_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
liveins: $vgpr0
; GCN-LABEL: name: shrink_vgpr_fi_vgpr_v_add_i32_e64_no_carry_out_use
; GCN: liveins: $vgpr0
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 [[V_MOV_B32_e32_]], [[COPY]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%1:vgpr_32 = COPY $vgpr0
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is a VGPR, other operand FI is in a VGPR
name: shrink_vgpr_vgpr_fi_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
liveins: $vgpr0
; GCN-LABEL: name: shrink_vgpr_vgpr_fi_v_add_i32_e64_no_carry_out_use
; GCN: liveins: $vgpr0
; GCN: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 [[COPY]], [[V_MOV_B32_e32_]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:vgpr_32 = COPY $vgpr0
%1:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is FI is in an SGPR, other operand is a VGPR
name: shrink_vgpr_fi_sgpr_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
liveins: $sgpr0
; GCN-LABEL: name: shrink_vgpr_fi_sgpr_v_add_i32_e64_no_carry_out_use
; GCN: liveins: $sgpr0
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[COPY:%[0-9]+]]:sreg_32_xm0 = COPY $sgpr0
; GCN: [[V_ADD_CO_U32_e64_:%[0-9]+]]:vgpr_32, [[V_ADD_CO_U32_e64_1:%[0-9]+]]:sreg_64 = V_ADD_CO_U32_e64 [[COPY]], [[V_MOV_B32_e32_]], 0, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e64_]]
%0:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%1:sreg_32_xm0 = COPY $sgpr0
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is an SGPR, other operand FI is in a VGPR
name: shrink_sgpr_vgpr_fi_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
liveins: $sgpr0
; GCN-LABEL: name: shrink_sgpr_vgpr_fi_v_add_i32_e64_no_carry_out_use
; GCN: liveins: $sgpr0
; GCN: [[COPY:%[0-9]+]]:sreg_32_xm0 = COPY $sgpr0
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[V_ADD_CO_U32_e64_:%[0-9]+]]:vgpr_32, [[V_ADD_CO_U32_e64_1:%[0-9]+]]:sreg_64 = V_ADD_CO_U32_e64 [[V_MOV_B32_e32_]], [[COPY]], 0, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e64_]]
%0:sreg_32_xm0 = COPY $sgpr0
%1:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is FI is in an SGPR, other operand is a VGPR
name: shrink_sgpr_fi_vgpr_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
liveins: $vgpr0
; GCN-LABEL: name: shrink_sgpr_fi_vgpr_v_add_i32_e64_no_carry_out_use
; GCN: liveins: $vgpr0
; GCN: [[S_MOV_B32_:%[0-9]+]]:sreg_32_xm0 = S_MOV_B32 %stack.0
; GCN: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 [[S_MOV_B32_]], [[COPY]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:sreg_32_xm0 = S_MOV_B32 %stack.0
%1:vgpr_32 = COPY $vgpr0
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is a VGPR, other operand FI is in an SGPR
name: shrink_vgpr_sgpr_fi_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16}
body: |
bb.0:
liveins: $vgpr0
; GCN-LABEL: name: shrink_vgpr_sgpr_fi_v_add_i32_e64_no_carry_out_use
; GCN: liveins: $vgpr0
; GCN: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
; GCN: [[S_MOV_B32_:%[0-9]+]]:sreg_32_xm0 = S_MOV_B32 %stack.0
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 [[S_MOV_B32_]], [[COPY]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:vgpr_32 = COPY $vgpr0
%1:sreg_32_xm0 = S_MOV_B32 %stack.0
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is FI is in a VGPR, other operand is an inline imm in a VGPR
name: shrink_vgpr_imm_fi_vgpr_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
; GCN-LABEL: name: shrink_vgpr_imm_fi_vgpr_v_add_i32_e64_no_carry_out_use
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 16, [[V_MOV_B32_e32_]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 16, implicit $exec
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is an inline imm in a VGPR, other operand FI is in a VGPR
name: shrink_vgpr_imm_vgpr_fi_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
; GCN-LABEL: name: shrink_vgpr_imm_vgpr_fi_v_add_i32_e64_no_carry_out_use
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[V_ADD_CO_U32_e64_:%[0-9]+]]:vgpr_32, [[V_ADD_CO_U32_e64_1:%[0-9]+]]:sreg_64 = V_ADD_CO_U32_e64 16, [[V_MOV_B32_e32_]], 0, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e64_]]
%0:vgpr_32 = V_MOV_B32_e32 16, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is FI is in a VGPR, other operand is an literal constant in a VGPR
name: shrink_vgpr_k_fi_vgpr_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
; GCN-LABEL: name: shrink_vgpr_k_fi_vgpr_v_add_i32_e64_no_carry_out_use
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 1234, [[V_MOV_B32_e32_]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 1234, implicit $exec
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...
---
# First operand is a literal constant in a VGPR, other operand FI is in a VGPR
name: shrink_vgpr_k_vgpr_fi_v_add_i32_e64_no_carry_out_use
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 64, alignment: 16 }
body: |
bb.0:
; GCN-LABEL: name: shrink_vgpr_k_vgpr_fi_v_add_i32_e64_no_carry_out_use
; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 1234, implicit $exec
; GCN: [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 %stack.0, [[V_MOV_B32_e32_]], implicit-def $vcc, implicit $exec
; GCN: S_ENDPGM 0, implicit [[V_ADD_CO_U32_e32_]]
%0:vgpr_32 = V_MOV_B32_e32 1234, implicit $exec
%1:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
%2:vgpr_32, %3:sreg_64 = V_ADD_CO_U32_e64 %0, %1, 0, implicit $exec
S_ENDPGM 0, implicit %2
...