1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 03:33:20 +01:00
llvm-mirror/test/CodeGen/Thumb2/t2sizereduction.mir
Simon Tatham a1d7f2fdc1 [ARM] Replace fp-only-sp and d16 with fp64 and d32.
Those two subtarget features were awkward because their semantics are
reversed: each one indicates the _lack_ of support for something in
the architecture, rather than the presence. As a consequence, you
don't get the behavior you want if you combine two sets of feature
bits.

Each SubtargetFeature for an FP architecture version now comes in four
versions, one for each combination of those options. So you can still
say (for example) '+vfp2' in a feature string and it will mean what
it's always meant, but there's a new string '+vfp2d16sp' meaning the
version without those extra options.

A lot of this change is just mechanically replacing positive checks
for the old features with negative checks for the new ones. But one
more interesting change is that I've rearranged getFPUFeatures() so
that the main FPU feature is appended to the output list *before*
rather than after the features derived from the Restriction field, so
that -fp64 and -d32 can override defaults added by the main feature.

Reviewers: dmgreen, samparker, SjoerdMeijer

Subscribers: srhines, javed.absar, eraman, kristof.beyls, hiraditya, zzheng, Petar.Avramovic, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D60691

llvm-svn: 361845
2019-05-28 16:13:20 +00:00

84 lines
3.3 KiB
YAML

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -run-pass=t2-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" "no-frame-pointer-elim"="false" "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, $noreg
; CHECK: $r0, dead $cpsr = tMOVi8 1, 14, $noreg
; CHECK: tCMPi8 $r1, 1, 14, $noreg, implicit-def $cpsr
; CHECK: t2Bcc %bb.2, 11, 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, $noreg
; CHECK: $r2, dead $cpsr = tADDi8 killed $r2, 1, 14, $noreg
; CHECK: $r1, $cpsr = tSUBi8 killed $r1, 1, 14, $noreg
; CHECK: t2Bcc %bb.1, 1, killed $cpsr
; CHECK: bb.2.for.cond.cleanup:
; CHECK: liveins: $r0
; CHECK: tBX_RET 14, $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
...