llvm-project/llvm/test/CodeGen/ARM/GlobalISel/thumb-select-shifts.mir

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# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
--- |
define void @test_ashr_rr() { ret void }
define void @test_shl_ri() { ret void }
define void @test_shl_ri_bad_imm() { ret void }
...
---
name: test_ashr_rr
# CHECK-LABEL: name: test_ashr_rr
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
body: |
bb.0:
liveins: $r0, $r1
%0(s32) = COPY $r0
; CHECK: [[VREGX:%[0-9]+]]:rgpr = COPY $r0
%1(s32) = COPY $r1
; CHECK: [[VREGY:%[0-9]+]]:rgpr = COPY $r1
%2(s32) = G_ASHR %0, %1
; CHECK: [[VREGRES:%[0-9]+]]:rgpr = t2ASRrr [[VREGX]], [[VREGY]], 14, $noreg, $noreg
$r0 = COPY %2(s32)
; CHECK: $r0 = COPY [[VREGRES]]
BX_RET 14, $noreg, implicit $r0
; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name: test_shl_ri
# CHECK-LABEL: name: test_shl_ri
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
body: |
bb.0:
liveins: $r0
%0(s32) = COPY $r0
; CHECK: [[VREGX:%[0-9]+]]:rgpr = COPY $r0
%1(s32) = G_CONSTANT i32 31
%2(s32) = G_SHL %0, %1
; CHECK: [[VREGRES:%[0-9]+]]:rgpr = t2LSLri [[VREGX]], 31, 14, $noreg, $noreg
$r0 = COPY %2(s32)
; CHECK: $r0 = COPY [[VREGRES]]
BX_RET 14, $noreg, implicit $r0
; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name: test_shl_ri_bad_imm
# CHECK-LABEL: name: test_shl_ri_bad_imm
legalized: true
regBankSelected: true
selected: false
# CHECK: selected: true
registers:
- { id: 0, class: gprb }
- { id: 1, class: gprb }
- { id: 2, class: gprb }
body: |
bb.0:
liveins: $r0
%0(s32) = COPY $r0
; CHECK: [[VREGX:%[0-9]+]]:rgpr = COPY $r0
%1(s32) = G_CONSTANT i32 32
; CHECK: [[VREGY:%[0-9]+]]:rgpr = t2MOVi 32, 14, $noreg, $noreg
%2(s32) = G_SHL %0, %1
; CHECK: [[VREGRES:%[0-9]+]]:rgpr = t2LSLrr [[VREGX]], [[VREGY]], 14, $noreg, $noreg
$r0 = COPY %2(s32)
; CHECK: $r0 = COPY [[VREGRES]]
BX_RET 14, $noreg, implicit $r0
; CHECK: BX_RET 14, $noreg, implicit $r0
...