| # 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 |
| |
| ... |