--- /dev/null
+# RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple powerpc64le-unknown-linux-gnu \
+# RUN: -run-pass=block-placement -o - %s | FileCheck %s
+--- |
+ ; ModuleID = 'block-placement.ll'
+ source_filename = "block-placement.ll"
+ target datalayout = "e-m:e-i64:64-n32:64"
+ target triple = "powerpc64le-unknown-linux-gnu"
+
+ %"class.xercesc_2_7::HashXMLCh" = type { %"class.xercesc_2_7::HashBase" }
+ %"class.xercesc_2_7::HashBase" = type { i32 (...)** }
+
+ define dso_local zeroext i1 @_ZN11xercesc_2_79HashXMLCh6equalsEPKvS2_(%"class.xercesc_2_7::HashXMLCh"* nocapture readnone %this, i8* readonly %key1, i8* readonly %key2) unnamed_addr #0 {
+ entry:
+ %cmp.i = icmp eq i8* %key1, null
+ %cmp1.i = icmp eq i8* %key2, null
+ %or.cond.i = or i1 %cmp.i, %cmp1.i
+ br i1 %or.cond.i, label %if.then.i, label %while.cond.preheader.i
+
+ while.cond.preheader.i: ; preds = %entry
+ %0 = bitcast i8* %key2 to i16*
+ %1 = bitcast i8* %key1 to i16*
+ %2 = load i16, i16* %1, align 2
+ %3 = load i16, i16* %0, align 2
+ %cmp926.i = icmp eq i16 %2, %3
+ br i1 %cmp926.i, label %while.body.i.preheader, label %_ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit
+
+ while.body.i.preheader: ; preds = %while.cond.preheader.i
+ %scevgep = getelementptr i8, i8* %key2, i64 2
+ %scevgep4 = getelementptr i8, i8* %key1, i64 2
+ br label %while.body.i
+
+ if.then.i: ; preds = %entry
+ br i1 %cmp.i, label %lor.lhs.false3.i, label %land.lhs.true.i
+
+ land.lhs.true.i: ; preds = %if.then.i
+ %4 = bitcast i8* %key1 to i16*
+ %5 = load i16, i16* %4, align 2
+ %tobool.i = icmp eq i16 %5, 0
+ br i1 %tobool.i, label %lor.lhs.false3.i, label %_ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit
+
+ lor.lhs.false3.i: ; preds = %land.lhs.true.i, %if.then.i
+ br i1 %cmp1.i, label %if.else.i, label %land.lhs.true5.i
+
+ land.lhs.true5.i: ; preds = %lor.lhs.false3.i
+ %6 = bitcast i8* %key2 to i16*
+ %7 = load i16, i16* %6, align 2
+ %tobool6.i = icmp eq i16 %7, 0
+ br i1 %tobool6.i, label %if.else.i, label %_ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit
+
+ if.else.i: ; preds = %land.lhs.true5.i, %lor.lhs.false3.i
+ br label %_ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit
+
+ while.body.i: ; preds = %while.body.i.preheader, %if.end12.i
+ %lsr.iv5 = phi i8* [ %scevgep4, %while.body.i.preheader ], [ %scevgep6, %if.end12.i ]
+ %lsr.iv = phi i8* [ %scevgep, %while.body.i.preheader ], [ %scevgep2, %if.end12.i ]
+ %8 = phi i16 [ %15, %if.end12.i ], [ %2, %while.body.i.preheader ]
+ %9 = phi i8* [ %key1, %while.body.i.preheader ], [ %13, %if.end12.i ]
+ %10 = phi i8* [ %key2, %while.body.i.preheader ], [ %11, %if.end12.i ]
+ %11 = getelementptr i8, i8* %10, i64 2
+ %12 = bitcast i8* %11 to i16*
+ %13 = getelementptr i8, i8* %9, i64 2
+ %14 = bitcast i8* %13 to i16*
+ %tobool10.i = icmp eq i16 %8, 0
+ br i1 %tobool10.i, label %_ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit, label %if.end12.i
+
+ if.end12.i: ; preds = %while.body.i
+ %15 = load i16, i16* %14, align 2
+ %16 = load i16, i16* %12, align 2
+ %cmp9.i = icmp eq i16 %15, %16
+ %scevgep2 = getelementptr i8, i8* %lsr.iv, i64 2
+ %scevgep6 = getelementptr i8, i8* %lsr.iv5, i64 2
+ br i1 %cmp9.i, label %while.body.i, label %_ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit
+
+ _ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit: ; preds = %if.end12.i, %while.body.i, %if.else.i, %land.lhs.true5.i, %land.lhs.true.i, %while.cond.preheader.i
+ %retval.0.i1 = phi i64 [ 1, %if.else.i ], [ 0, %land.lhs.true.i ], [ 0, %land.lhs.true5.i ], [ 0, %while.cond.preheader.i ], [ 0, %if.end12.i ], [ 1, %while.body.i ]
+ %backToBool = trunc i64 %retval.0.i1 to i1
+ ret i1 %backToBool
+ }
+
+ attributes #0 = { "target-cpu"="pwr9" }
+
+...
+---
+name: _ZN11xercesc_2_79HashXMLCh6equalsEPKvS2_
+alignment: 4
+exposesReturnsTwice: false
+legalized: false
+regBankSelected: false
+selected: false
+failedISel: false
+tracksRegLiveness: true
+hasWinCFI: false
+registers: []
+liveins:
+ - { reg: '$x4', virtual-reg: '' }
+ - { reg: '$x5', virtual-reg: '' }
+frameInfo:
+ isFrameAddressTaken: false
+ isReturnAddressTaken: false
+ hasStackMap: false
+ hasPatchPoint: false
+ stackSize: 0
+ offsetAdjustment: 0
+ maxAlignment: 0
+ 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: |
+ bb.0.entry:
+ successors: %bb.5(0x40000000), %bb.1(0x40000000)
+ liveins: $x4, $x5
+
+ renamable $cr1 = CMPDI renamable $x4, 0
+ renamable $cr0 = CMPDI renamable $x5, 0
+ renamable $cr5lt = CROR renamable $cr1eq, renamable $cr0eq
+ BC killed renamable $cr5lt, %bb.5
+
+ bb.1.while.cond.preheader.i:
+ successors: %bb.2(0x40000000), %bb.11(0x40000000)
+ liveins: $x4, $x5
+
+ renamable $r8 = LHZ 0, renamable $x4 :: (load 2 from %ir.1)
+ renamable $r6 = LHZ 0, renamable $x5 :: (load 2 from %ir.0)
+ renamable $x3 = LI8 0
+ renamable $cr0 = CMPLW renamable $r8, killed renamable $r6
+ BCC 68, killed renamable $cr0, %bb.11
+
+ bb.2.while.body.i.preheader:
+ successors: %bb.3(0x80000000)
+ liveins: $r8, $x3, $x4, $x5
+
+ renamable $x6 = ADDI8 renamable $x5, 2
+ renamable $x7 = ADDI8 renamable $x4, 2
+
+ bb.3.while.body.i:
+ successors: %bb.4(0x04000000), %bb.10(0x7c000000)
+ liveins: $r8, $x3, $x4, $x5, $x6, $x7
+
+ dead renamable $r8 = ANDIo killed renamable $r8, 65535, implicit-def $cr0
+ BCC 68, killed renamable $cr0, %bb.10
+
+ bb.4:
+ renamable $x3 = LI8 1
+ BLR8 implicit $lr8, implicit $rm, implicit killed $x3
+
+ bb.5.if.then.i:
+ successors: %bb.7(0x30000000), %bb.6(0x50000000)
+ liveins: $cr0, $cr1, $x4, $x5
+
+ BC killed renamable $cr1eq, %bb.7
+
+ bb.6.land.lhs.true.i:
+ successors: %bb.7(0x30000000), %bb.11(0x50000000)
+ liveins: $cr0, $x4, $x5
+
+ renamable $r4 = LHZ 0, killed renamable $x4 :: (load 2 from %ir.4)
+ renamable $x3 = LI8 0
+ renamable $cr1 = CMPLWI killed renamable $r4, 0
+ BCC 68, killed renamable $cr1, %bb.11
+
+ bb.7.lor.lhs.false3.i:
+ successors: %bb.9(0x30000000), %bb.8(0x50000000)
+ liveins: $cr0, $x5
+
+ BC killed renamable $cr0eq, %bb.9
+
+ bb.8.land.lhs.true5.i:
+ successors: %bb.9(0x80000000)
+ liveins: $x5
+
+ renamable $r4 = LHZ 0, killed renamable $x5 :: (load 2 from %ir.6)
+ renamable $x3 = LI8 0
+ renamable $cr0 = CMPLWI killed renamable $r4, 0
+ BCCLR 68, killed renamable $cr0, implicit $lr, implicit $rm, implicit killed $x3
+
+ bb.9.if.else.i:
+ renamable $x3 = LI8 1
+ BLR8 implicit $lr8, implicit $rm, implicit killed $x3
+
+ bb.10.if.end12.i:
+ successors: %bb.3(0x7c000000), %bb.11(0x04000000)
+ liveins: $x3, $x4, $x5, $x6, $x7
+
+ renamable $x5 = ADDI8 killed renamable $x5, 2
+ renamable $x4 = ADDI8 killed renamable $x4, 2
+ renamable $r8 = LHZ 0, renamable $x4 :: (load 2 from %ir.14)
+ renamable $r9 = LHZ 0, renamable $x5 :: (load 2 from %ir.12)
+ renamable $x6 = ADDI8 killed renamable $x6, 2
+ renamable $x7 = ADDI8 killed renamable $x7, 2
+ renamable $cr0 = CMPLW renamable $r8, killed renamable $r9
+ BCC 76, killed renamable $cr0, %bb.3
+
+ bb.11._ZN11xercesc_2_79XMLString6equalsEPKtS2_.exit:
+ liveins: $x3
+
+ BLR8 implicit $lr8, implicit $rm, implicit killed $x3
+
+ ; CHECK: bb.5.if.else.i:
+ ; CHECK: B %bb.11
+
+ ; CHECK: bb.11:
+ ; CHECK: renamable $x3 = LI8 1
+ ; CHECK-NEXT: BLR8 implicit $lr8, implicit $rm, implicit killed $x3
+...