# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -run-pass=thumb2-reduce-size %s -o - | FileCheck %s
--- |
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
target triple = "thumbv8m.main-arm-none-eabi"
; Function Attrs: norecurse nounwind readnone
define i32 @test(i32 %x, i32 %y) local_unnamed_addr #0 {
entry:
%cmp6 = icmp sgt i32 %y, 0
br i1 %cmp6, label %for.body.preheader, label %for.cond.cleanup
for.body.preheader: ; preds = %entry
br label %for.body
for.cond.cleanup: ; preds = %for.body, %entry
%sum.0.lcssa = phi i32 [ 1, %entry ], [ %mul, %for.body ]
ret i32 %sum.0.lcssa
for.body: ; preds = %for.body, %for.body.preheader
%lsr.iv1 = phi i32 [ %lsr.iv.next2, %for.body ], [ %x, %for.body.preheader ]
%lsr.iv = phi i32 [ %lsr.iv.next, %for.body ], [ %y, %for.body.preheader ]
%sum.07 = phi i32 [ %mul, %for.body ], [ 1, %for.body.preheader ]
%mul = mul nsw i32 %lsr.iv1, %sum.07
%lsr.iv.next = add i32 %lsr.iv, -1
%lsr.iv.next2 = add i32 %lsr.iv1, 1
%exitcond = icmp eq i32 %lsr.iv.next, 0
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
attributes #0 = { norecurse nounwind readnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="cortex-m7" "target-features"="-d32,+dsp,+fp-armv8,-fp64,+hwdiv,+strict-align,+thumb-mode,-crc,-dotprod,-hwdiv-arm,-ras" "unsafe-fp-math"="false" "use-soft-float"="false" }
...
---
name: test
tracksRegLiveness: true
liveins:
- { reg: '$r0', virtual-reg: '' }
- { reg: '$r1', virtual-reg: '' }
body: |
; CHECK-LABEL: name: test
; CHECK: bb.0.entry:
; CHECK: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK: liveins: $r0, $r1
; CHECK: $r2 = tMOVr $r0, 14 /* CC::al */, $noreg
; CHECK: $r0, dead $cpsr = tMOVi8 1, 14 /* CC::al */, $noreg
; CHECK: tCMPi8 $r1, 1, 14 /* CC::al */, $noreg, implicit-def $cpsr
; CHECK: t2Bcc %bb.2, 11 /* CC::lt */, killed $cpsr
; CHECK: bb.1.for.body:
; CHECK: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK: liveins: $r0, $r1, $r2
; CHECK: $r0, dead $cpsr = tMUL $r2, killed $r0, 14 /* CC::al */, $noreg
; CHECK: $r2, dead $cpsr = tADDi8 killed $r2, 1, 14 /* CC::al */, $noreg
; CHECK: $r1, $cpsr = tSUBi8 killed $r1, 1, 14 /* CC::al */, $noreg
; CHECK: t2Bcc %bb.1, 1 /* CC::ne */, killed $cpsr
; CHECK: bb.2.for.cond.cleanup:
; CHECK: liveins: $r0
; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit $r0
bb.0.entry:
successors: %bb.1.for.body, %bb.2.for.cond.cleanup
liveins: $r0, $r1
$r2 = tMOVr $r0, 14, _
$r0 = t2MOVi 1, 14, _, _
t2CMPri $r1, 1, 14, _, implicit-def $cpsr
t2Bcc %bb.2.for.cond.cleanup, 11, killed $cpsr
bb.1.for.body:
successors: %bb.2.for.cond.cleanup, %bb.1.for.body
liveins: $r0, $r1, $r2
$r0 = t2MUL $r2, killed $r0, 14, _
$r2 = t2ADDri killed $r2, 1, 14, _, _
$r1 = t2SUBri killed $r1, 1, 14, _, def $cpsr
t2Bcc %bb.1.for.body, 1, killed $cpsr
bb.2.for.cond.cleanup:
liveins: $r0
tBX_RET 14, _, implicit $r0
...
Codebase Browser
llvm