[ARM GlobalISel] Add tests for REVSH patterns. NFC

Add instruction selector tests for some of the REVSH patterns handled by
TableGen.

llvm-svn: 318393
This commit is contained in:
Diana Picus 2017-11-16 12:29:28 +00:00
parent 0844ff2aa7
commit 4d242b18b2
1 changed files with 185 additions and 0 deletions

View File

@ -7,6 +7,11 @@
define void @test_mls() #2 { ret void }
define void @test_no_mls() { ret void }
define void @test_shifts_to_revsh() #0 { ret void }
define void @test_shifts_to_revsh_commutative() #0 { ret void }
define void @test_shifts_no_revsh_features() #1 { ret void }
define void @test_shifts_no_revsh_constants() #0 { ret void }
attributes #0 = { "target-features"="+v6" }
attributes #1 = { "target-features"="-v6" }
attributes #2 = { "target-features"="+v6t2" }
@ -182,3 +187,183 @@ body: |
BX_RET 14, _, implicit %r0
; CHECK: BX_RET 14, _, implicit %r0
...
---
name: test_shifts_to_revsh
# CHECK-LABEL: name: test_shifts_to_revsh
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
- { id: 3, class: gprb }
- { id: 4, class: gprb }
- { id: 5, class: gprb }
- { id: 6, class: gprb }
- { id: 7, class: gprb }
- { id: 8, class: gprb }
- { id: 9, class: gprb }
body: |
bb.0:
liveins: %r0
%0(s32) = COPY %r0
; CHECK: [[VREGX:%[0-9]+]]:gpr = COPY %r0
%1(s32) = G_CONSTANT i32 24
%2(s32) = G_SHL %0(s32), %1(s32)
%3(s32) = G_CONSTANT i32 16
%4(s32) = G_ASHR %2(s32), %3(s32)
%5(s32) = G_CONSTANT i32 8
%6(s32) = G_LSHR %0(s32), %5(s32)
%7(s32) = G_CONSTANT 255
%8(s32) = G_AND %6(s32), %7(s32)
%9(s32) = G_OR %4(s32), %8(s32)
; CHECK: [[VREGR:%[0-9]+]]:gpr = REVSH [[VREGX]]
%r0 = COPY %9(s32)
; CHECK: %r0 = COPY [[VREGR]]
BX_RET 14, _, implicit %r0
; CHECK: BX_RET 14, _, implicit %r0
...
---
name: test_shifts_to_revsh_commutative
# CHECK-LABEL: name: test_shifts_to_revsh_commutative
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
- { id: 3, class: gprb }
- { id: 4, class: gprb }
- { id: 5, class: gprb }
- { id: 6, class: gprb }
- { id: 7, class: gprb }
- { id: 8, class: gprb }
- { id: 9, class: gprb }
body: |
bb.0:
liveins: %r0
%0(s32) = COPY %r0
; CHECK: [[VREGX:%[0-9]+]]:gpr = COPY %r0
%1(s32) = G_CONSTANT i32 24
%2(s32) = G_SHL %0(s32), %1(s32)
%3(s32) = G_CONSTANT i32 16
%4(s32) = G_ASHR %2(s32), %3(s32)
%5(s32) = G_CONSTANT i32 8
%6(s32) = G_LSHR %0(s32), %5(s32)
%7(s32) = G_CONSTANT 255
%8(s32) = G_AND %6(s32), %7(s32)
%9(s32) = G_OR %8(s32), %4(s32)
; CHECK: [[VREGR:%[0-9]+]]:gpr = REVSH [[VREGX]]
%r0 = COPY %9(s32)
; CHECK: %r0 = COPY [[VREGR]]
BX_RET 14, _, implicit %r0
; CHECK: BX_RET 14, _, implicit %r0
...
---
name: test_shifts_no_revsh_features
# CHECK-LABEL: name: test_shifts_no_revsh
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
- { id: 3, class: gprb }
- { id: 4, class: gprb }
- { id: 5, class: gprb }
- { id: 6, class: gprb }
- { id: 7, class: gprb }
- { id: 8, class: gprb }
- { id: 9, class: gprb }
body: |
bb.0:
liveins: %r0
%0(s32) = COPY %r0
%1(s32) = G_CONSTANT i32 24
%2(s32) = G_SHL %0(s32), %1(s32)
%3(s32) = G_CONSTANT i32 16
%4(s32) = G_ASHR %2(s32), %3(s32)
%5(s32) = G_CONSTANT i32 8
%6(s32) = G_LSHR %0(s32), %5(s32)
%7(s32) = G_CONSTANT 255
%8(s32) = G_AND %6(s32), %7(s32)
%9(s32) = G_OR %4(s32), %8(s32)
; We don't really care how this is folded as long as it's not into a REVSH.
; CHECK-NOT: REVSH
%r0 = COPY %9(s32)
BX_RET 14, _, implicit %r0
...
---
name: test_shifts_no_revsh_constants
# CHECK-LABEL: name: test_shifts_no_revsh_constants
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
- { id: 3, class: gprb }
- { id: 4, class: gprb }
- { id: 5, class: gprb }
- { id: 6, class: gprb }
- { id: 7, class: gprb }
- { id: 8, class: gprb }
- { id: 9, class: gprb }
body: |
bb.0:
liveins: %r0
%0(s32) = COPY %r0
%1(s32) = G_CONSTANT i32 16 ; REVSH needs 24 here
%2(s32) = G_SHL %0(s32), %1(s32)
%3(s32) = G_CONSTANT i32 24 ; REVSH needs 16 here
%4(s32) = G_ASHR %2(s32), %3(s32)
%5(s32) = G_CONSTANT i32 8
%6(s32) = G_LSHR %0(s32), %5(s32)
%7(s32) = G_CONSTANT 255
%8(s32) = G_AND %6(s32), %7(s32)
%9(s32) = G_OR %4(s32), %8(s32)
; We don't really care how this is folded as long as it's not into a REVSH.
; CHECK-NOT: REVSH
%r0 = COPY %9(s32)
BX_RET 14, _, implicit %r0
...