m4-sched-ldr.mir
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# RUN: llc %s -run-pass machine-scheduler -o - | FileCheck %s
# CHECK-LABEL: bb.0.
# CHECK: t2LDRi12
# CHECK-NEXT: t2LDRi12
# CHECK-NEXT: t2ADDri
# CHECK-NEXT: t2ADDri
--- |
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv7em-arm-none-eabi"
; Function Attrs: norecurse nounwind optsize readonly
define dso_local i32 @test(i32* nocapture readonly %a, i32* nocapture readonly %b) local_unnamed_addr #0 {
entry:
%0 = load i32, i32* %a, align 4
%add = add nsw i32 %0, 10
%1 = load i32, i32* %b, align 4
%add1 = add nsw i32 %1, 20
%mul = mul nsw i32 %add1, %add
ret i32 %mul
}
attributes #0 = { "target-cpu"="cortex-m4" }
...
---
name: test
alignment: 2
exposesReturnsTwice: false
legalized: false
regBankSelected: false
selected: false
failedISel: false
tracksRegLiveness: true
registers:
- { id: 0, class: gpr, preferred-register: '' }
- { id: 1, class: gpr, preferred-register: '' }
- { id: 2, class: gprnopc, preferred-register: '' }
- { id: 3, class: rgpr, preferred-register: '' }
- { id: 4, class: gprnopc, preferred-register: '' }
- { id: 5, class: rgpr, preferred-register: '' }
- { id: 6, class: rgpr, preferred-register: '' }
liveins:
- { reg: '$r0', virtual-reg: '%0' }
- { reg: '$r1', virtual-reg: '%1' }
body: |
bb.0.entry:
liveins: $r0, $r1
%1:gpr = COPY $r1
%0:gpr = COPY $r0
%2:gprnopc = t2LDRi12 %0, 0, 14, $noreg :: (load 4 from %ir.a)
%3:rgpr = nsw t2ADDri %2, 10, 14, $noreg, $noreg
%4:gprnopc = t2LDRi12 %1, 0, 14, $noreg :: (load 4 from %ir.b)
%5:rgpr = nsw t2ADDri %4, 20, 14, $noreg, $noreg
%6:rgpr = nsw t2MUL %5, %3, 14, $noreg
$r0 = COPY %6
tBX_RET 14, $noreg, implicit $r0
...