# RUN: llc -mtriple=aarch64-unknown-unknown -run-pass=early-ifcvt -verify-machineinstrs %s -o - | FileCheck %s
--- |
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "arm64-apple-ios13.3.0"
define hidden void @phi_operands_regclasses_different() #0 {
entry:
br i1 undef, label %if.then139.i, label %if.else142.i
if.then139.i: ; preds = %entry
%0 = load double, ptr undef, align 8
br label %if.end161.i
if.else142.i: ; preds = %entry
%tobool154.i = icmp eq i8 undef, 0
br i1 %tobool154.i, label %if.then155.i, label %if.end161.i
if.then155.i: ; preds = %if.else142.i
%add158.i = fadd double undef, 0.000000e+00
br label %if.end161.i
if.end161.i: ; preds = %if.then155.i, %if.else142.i, %if.then139.i
%y2.0.i = phi double [ %0, %if.then139.i ], [ 0.000000e+00, %if.else142.i ], [ 0.000000e+00, %if.then155.i ]
%add169.i = fadd double 0.000000e+00, %y2.0.i
%1 = fmul double undef, %add169.i
%add174.i = fsub double undef, %1
%2 = call double @llvm.fabs.f64(double %add174.i) #2
%cmp.i516.i = fcmp olt double %2, 0x3BC79CA10C924223
br i1 %cmp.i516.i, label %if.then.i.i, label %if.end9.i.i
if.then.i.i: ; preds = %if.end161.i
%3 = call double @llvm.fabs.f64(double undef) #2
unreachable
if.end9.i.i: ; preds = %if.end161.i
ret void
}
declare double @llvm.fabs.f64(double) #1
declare void @llvm.stackprotector(ptr, ptr) #2
attributes #0 = { "target-cpu"="apple-a7" }
attributes #1 = { nounwind readnone speculatable willreturn }
attributes #2 = { nounwind }
!llvm.ident = !{!0}
!0 = !{!"clang"}
...
---
name: phi_operands_regclasses_different
alignment: 4
exposesReturnsTwice: false
legalized: true
regBankSelected: true
selected: true
failedISel: false
tracksRegLiveness: true
hasWinCFI: false
registers:
- { id: 0, class: gpr32, preferred-register: '' }
- { id: 1, class: _, preferred-register: '' }
- { id: 2, class: _, preferred-register: '' }
- { id: 3, class: gpr, preferred-register: '' }
- { id: 4, class: gpr64, preferred-register: '' }
- { id: 5, class: fpr, preferred-register: '' }
- { id: 6, class: _, preferred-register: '' }
- { id: 7, class: gpr64, preferred-register: '' }
- { id: 8, class: gpr64common, preferred-register: '' }
- { id: 9, class: gpr64, preferred-register: '' }
- { id: 10, class: fpr64, preferred-register: '' }
- { id: 11, class: fpr64, preferred-register: '' }
- { id: 12, class: fpr, preferred-register: '' }
- { id: 13, class: fpr64, preferred-register: '' }
- { id: 14, class: fpr, preferred-register: '' }
- { id: 15, class: gpr32, preferred-register: '' }
- { id: 16, class: _, preferred-register: '' }
- { id: 17, class: gpr32, preferred-register: '' }
- { id: 18, class: gpr32, preferred-register: '' }
- { id: 19, class: gpr32, preferred-register: '' }
- { id: 20, class: gpr, preferred-register: '' }
- { id: 21, class: fpr64, preferred-register: '' }
- { id: 22, class: fpr64, preferred-register: '' }
- { id: 23, class: fpr64, preferred-register: '' }
- { id: 24, class: fpr64, preferred-register: '' }
- { id: 25, class: fpr64, preferred-register: '' }
- { id: 26, class: fpr64, preferred-register: '' }
- { id: 27, class: fpr64, preferred-register: '' }
- { id: 28, class: gpr64, preferred-register: '' }
liveins: []
frameInfo:
isFrameAddressTaken: false
isReturnAddressTaken: false
hasStackMap: false
hasPatchPoint: false
stackSize: 0
offsetAdjustment: 0
maxAlignment: 1
adjustsStack: false
hasCalls: false
stackProtector: ''
maxCallFrameSize: 0
cvBytesOfCalleeSavedRegisters: 0
hasOpaqueSPAdjustment: false
hasVAStart: false
hasMustTailInVarArgFunc: false
localFrameSize: 0
savePoint: ''
restorePoint: ''
fixedStack: []
stack: []
callSites: []
constants: []
machineFunctionInfo: {}
body: |
; Here we check that we don't ifcvt to a CSEL that uses GPRs, because
; some operands to the PHI have the fpr64 regclass.
; CHECK-LABEL: name: phi_operands_regclasses_different
; CHECK-NOT: CSELXr
bb.1.entry:
successors: %bb.2(0x40000000), %bb.3(0x40000000)
%0:gpr32 = IMPLICIT_DEF
%4:gpr64 = IMPLICIT_DEF
%8:gpr64common = IMPLICIT_DEF
TBNZW %0, 0, %bb.2
B %bb.3
bb.2.if.then139.i:
successors: %bb.5(0x80000000)
%7:gpr64 = LDRXui %8, 0 :: (load (s64) from `ptr undef`)
B %bb.5
bb.3.if.else142.i:
successors: %bb.4(0x40000000), %bb.5(0x40000000)
%26:fpr64 = FMOVD0
%19:gpr32 = COPY $wzr
CBNZW %19, %bb.5
bb.4.if.then155.i:
successors: %bb.5(0x80000000)
%27:fpr64 = FMOVD0
bb.5.if.end161.i:
successors: %bb.6(0x40000000), %bb.7(0x40000000)
%9:gpr64 = PHI %7, %bb.2, %26, %bb.3, %27, %bb.4
%21:fpr64 = COPY %9
%25:fpr64 = FMOVD0
%10:fpr64 = FADDDrr %25, %21, implicit $fpcr
%22:fpr64 = COPY %4
%11:fpr64 = FMULDrr %22, %10, implicit $fpcr
%23:fpr64 = COPY %4
%13:fpr64 = FABD64 %23, %11, implicit $fpcr
%28:gpr64 = MOVi64imm 4307583784117748259
%24:fpr64 = COPY %28
FCMPDrr %13, %24, implicit-def $nzcv, implicit $fpcr
%17:gpr32 = CSINCWr $wzr, $wzr, 5, implicit $nzcv
TBNZW %17, 0, %bb.6
B %bb.7
bb.6.if.then.i.i:
successors:
bb.7.if.end9.i.i:
RET_ReallyLR
...
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