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[ARM GlobalISel] Add RegBankSelect tests for G_PHI 

RegBankSelect already handles G_PHI with some generic code. Add a couple
of tests for it.

llvm-svn: 321796
This commit is contained in:
Diana Picus 2018-01-04 13:09:20 +00:00
parent c768bbe2e7
commit bcabda43e4
1 changed files with 85 additions and 0 deletions
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85
llvm/test/CodeGen/ARM/GlobalISel/arm-regbankselect.mir
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@ -44,6 +44,9 @@
define void @test_br() { ret void }
define void @test_phi_s32() { ret void }
define void @test_phi_s64() #0 { ret void }
define void @test_fadd_s32() #0 { ret void }
define void @test_fadd_s64() #0 { ret void }
@ -800,6 +803,88 @@ body: |
...
---
name: test_phi_s32
# CHECK-LABEL: name: test_phi_s32
legalized: true
regBankSelected: false
# CHECK: regBankSelected: true
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
- { id: 3, class: _ }
- { id: 4, class: _ }
# CHECK: { id: 0, class: gprb, preferred-register: '' }
# CHECK: { id: 1, class: gprb, preferred-register: '' }
# CHECK: { id: 2, class: gprb, preferred-register: '' }
# CHECK: { id: 3, class: gprb, preferred-register: '' }
# CHECK: { id: 4, class: gprb, preferred-register: '' }
body: |
bb.0:
successors: %bb.1(0x40000000), %bb.2(0x40000000)
liveins: %r0, %r1, %r2
%0(s32) = COPY %r0
%1(s1) = G_TRUNC %0(s32)
%2(s32) = COPY %r1
%3(s32) = COPY %r2
G_BRCOND %1(s1), %bb.1
G_BR %bb.2
bb.1:
successors: %bb.2(0x80000000)
bb.2:
%4(s32) = G_PHI %2(s32), %bb.0, %3(s32), %bb.1
%r0 = COPY %4(s32)
BX_RET 14, %noreg, implicit %r0
...
---
name: test_phi_s64
# CHECK-LABEL: name: test_phi_s64
legalized: true
regBankSelected: false
# CHECK: regBankSelected: true
selected: false
tracksRegLiveness: true
registers:
- { id: 0, class: _ }
- { id: 1, class: _ }
- { id: 2, class: _ }
- { id: 3, class: _ }
- { id: 4, class: _ }
# CHECK: { id: 0, class: gprb, preferred-register: '' }
# CHECK: { id: 1, class: gprb, preferred-register: '' }
# CHECK: { id: 2, class: fprb, preferred-register: '' }
# CHECK: { id: 3, class: fprb, preferred-register: '' }
# CHECK: { id: 4, class: fprb, preferred-register: '' }
body: |
bb.0:
successors: %bb.1(0x40000000), %bb.2(0x40000000)
liveins: %r0, %d0, %d1
%0(s32) = COPY %r0
%1(s1) = G_TRUNC %0(s32)
%2(s64) = COPY %d0
%3(s64) = COPY %d1
G_BRCOND %1(s1), %bb.1
G_BR %bb.2
bb.1:
successors: %bb.2(0x80000000)
bb.2:
%4(s64) = G_PHI %2(s64), %bb.0, %3(s64), %bb.1
%d0 = COPY %4(s64)
BX_RET 14, %noreg, implicit %d0
...
---
name: test_fadd_s32
# CHECK-LABEL: name: test_fadd_s32
legalized: true