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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 42target datalayout = "e-m:e-i64:64-n32:64"3target triple = "powerpc64le-unknown-linux-gnu"4; This file mainly tests that one of the ISEL instruction in the group uses the same register for operand RT, RA, RB5; This redundant ISEL is introduced during register coalescing stage.6 7; Register coalescing first create the foldable ISEL instruction as we have seen in expand-foldable-isel.ll:8; %vreg85<def> = ISEL8 %vreg83, %vreg83, %vreg33:sub_eq9 10; Later the register coalescer figures out it could further coalesce %vreg85 with %vreg83:11; merge %vreg85:1@2288r into %vreg83:5@400B --> @400B12; erased: 2288r %vreg85<def> = COPY %vreg8313 14; After that we have:15; updated: 1504B %vreg83<def> = ISEL8 %vreg83, %vreg83, %vreg33:sub_eq16 17; RUN: llc -verify-machineinstrs -O2 -ppc-asm-full-reg-names -mcpu=pwr7 -mattr=+isel < %s | FileCheck %s --check-prefix=CHECK-GEN-ISEL-TRUE18; RUN: llc -verify-machineinstrs -O2 -ppc-asm-full-reg-names -mcpu=pwr7 -mattr=-isel < %s | FileCheck %s --implicit-check-not isel19 20@.str = private unnamed_addr constant [3 x i8] c"]]\00", align 121@.str.1 = private unnamed_addr constant [35 x i8] c"Index < Length && \22Invalid index!\22\00", align 122@.str.2 = private unnamed_addr constant [50 x i8] c"/home/jtony/src/llvm/include/llvm/ADT/StringRef.h\00", align 123@__PRETTY_FUNCTION__._ZNK4llvm9StringRefixEm = private unnamed_addr constant [47 x i8] c"char llvm::StringRef::operator[](size_t) const\00", align 124@.str.3 = private unnamed_addr constant [95 x i8] c"(data || length == 0) && \22StringRef cannot be built from a NULL argument with non-null length\22\00", align 125@__PRETTY_FUNCTION__._ZN4llvm9StringRefC2EPKcm = private unnamed_addr constant [49 x i8] c"llvm::StringRef::StringRef(const char *, size_t)\00", align 126define i64 @_Z3fn1N4llvm9StringRefE([2 x i64] %Str.coerce) {27; CHECK-GEN-ISEL-TRUE-LABEL: _Z3fn1N4llvm9StringRefE:28; CHECK-GEN-ISEL-TRUE: # %bb.0: # %entry29; CHECK-GEN-ISEL-TRUE-NEXT: mflr r030; CHECK-GEN-ISEL-TRUE-NEXT: stdu r1, -32(r1)31; CHECK-GEN-ISEL-TRUE-NEXT: std r0, 48(r1)32; CHECK-GEN-ISEL-TRUE-NEXT: .cfi_def_cfa_offset 3233; CHECK-GEN-ISEL-TRUE-NEXT: .cfi_offset lr, 1634; CHECK-GEN-ISEL-TRUE-NEXT: li r5, 235; CHECK-GEN-ISEL-TRUE-NEXT: # implicit-def: $x636; CHECK-GEN-ISEL-TRUE-NEXT: b .LBB0_337; CHECK-GEN-ISEL-TRUE-NEXT: .p2align 438; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_1: # %_ZNK4llvm9StringRefixEm.exit39; CHECK-GEN-ISEL-TRUE-NEXT: #40; CHECK-GEN-ISEL-TRUE-NEXT: cmplwi r7, 9341; CHECK-GEN-ISEL-TRUE-NEXT: addi r7, r6, -142; CHECK-GEN-ISEL-TRUE-NEXT: iseleq r6, r7, r643; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_2: # %_ZNK4llvm9StringRef6substrEmm.exit44; CHECK-GEN-ISEL-TRUE-NEXT: #45; CHECK-GEN-ISEL-TRUE-NEXT: addi r4, r4, -146; CHECK-GEN-ISEL-TRUE-NEXT: addi r3, r3, 147; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_3: # %while.cond.outer48; CHECK-GEN-ISEL-TRUE-NEXT: # =>This Loop Header: Depth=149; CHECK-GEN-ISEL-TRUE-NEXT: # Child Loop BB0_5 Depth 250; CHECK-GEN-ISEL-TRUE-NEXT: # Child Loop BB0_8 Depth 251; CHECK-GEN-ISEL-TRUE-NEXT: cmpldi r6, 052; CHECK-GEN-ISEL-TRUE-NEXT: beq cr0, .LBB0_853; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.4: # %while.cond.preheader54; CHECK-GEN-ISEL-TRUE-NEXT: #55; CHECK-GEN-ISEL-TRUE-NEXT: cmpldi r4, 056; CHECK-GEN-ISEL-TRUE-NEXT: beq- cr0, .LBB0_1557; CHECK-GEN-ISEL-TRUE-NEXT: .p2align 558; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_5: # %_ZNK4llvm9StringRefixEm.exit59; CHECK-GEN-ISEL-TRUE-NEXT: # Parent Loop BB0_3 Depth=160; CHECK-GEN-ISEL-TRUE-NEXT: # => This Inner Loop Header: Depth=261; CHECK-GEN-ISEL-TRUE-NEXT: lbz r7, 0(r3)62; CHECK-GEN-ISEL-TRUE-NEXT: cmplwi r7, 9263; CHECK-GEN-ISEL-TRUE-NEXT: bne cr0, .LBB0_164; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.6: # %if.then465; CHECK-GEN-ISEL-TRUE-NEXT: #66; CHECK-GEN-ISEL-TRUE-NEXT: cmpldi r4, 267; CHECK-GEN-ISEL-TRUE-NEXT: isellt r7, r4, r568; CHECK-GEN-ISEL-TRUE-NEXT: add r3, r3, r769; CHECK-GEN-ISEL-TRUE-NEXT: sub. r4, r4, r770; CHECK-GEN-ISEL-TRUE-NEXT: bne+ cr0, .LBB0_571; CHECK-GEN-ISEL-TRUE-NEXT: b .LBB0_1572; CHECK-GEN-ISEL-TRUE-NEXT: .p2align 573; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_7: # %if.then4.us74; CHECK-GEN-ISEL-TRUE-NEXT: #75; CHECK-GEN-ISEL-TRUE-NEXT: isellt r6, r4, r576; CHECK-GEN-ISEL-TRUE-NEXT: add r3, r3, r677; CHECK-GEN-ISEL-TRUE-NEXT: sub r4, r4, r678; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_8: # %while.cond.us79; CHECK-GEN-ISEL-TRUE-NEXT: # Parent Loop BB0_3 Depth=180; CHECK-GEN-ISEL-TRUE-NEXT: # => This Inner Loop Header: Depth=281; CHECK-GEN-ISEL-TRUE-NEXT: cmpldi r4, 282; CHECK-GEN-ISEL-TRUE-NEXT: bge cr0, .LBB0_1083; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.9: # %if.end.us84; CHECK-GEN-ISEL-TRUE-NEXT: #85; CHECK-GEN-ISEL-TRUE-NEXT: cmpldi cr1, r4, 086; CHECK-GEN-ISEL-TRUE-NEXT: bne+ cr1, .LBB0_1187; CHECK-GEN-ISEL-TRUE-NEXT: b .LBB0_1588; CHECK-GEN-ISEL-TRUE-NEXT: .p2align 589; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_10: # %if.end.i.i.us90; CHECK-GEN-ISEL-TRUE-NEXT: #91; CHECK-GEN-ISEL-TRUE-NEXT: lhz r6, 0(r3)92; CHECK-GEN-ISEL-TRUE-NEXT: cmplwi cr1, r6, 2390193; CHECK-GEN-ISEL-TRUE-NEXT: beq cr1, .LBB0_1494; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_11: # %_ZNK4llvm9StringRefixEm.exit.us95; CHECK-GEN-ISEL-TRUE-NEXT: #96; CHECK-GEN-ISEL-TRUE-NEXT: lbz r6, 0(r3)97; CHECK-GEN-ISEL-TRUE-NEXT: cmplwi cr1, r6, 9298; CHECK-GEN-ISEL-TRUE-NEXT: beq cr1, .LBB0_799; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.12: # %_ZNK4llvm9StringRefixEm.exit.us100; CHECK-GEN-ISEL-TRUE-NEXT: #101; CHECK-GEN-ISEL-TRUE-NEXT: cmplwi r6, 93102; CHECK-GEN-ISEL-TRUE-NEXT: beq cr0, .LBB0_16103; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.13: # %_ZNK4llvm9StringRef6substrEmm.exit.loopexit104; CHECK-GEN-ISEL-TRUE-NEXT: #105; CHECK-GEN-ISEL-TRUE-NEXT: li r6, 0106; CHECK-GEN-ISEL-TRUE-NEXT: b .LBB0_2107; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_14: # %if.then108; CHECK-GEN-ISEL-TRUE-NEXT: addi r1, r1, 32109; CHECK-GEN-ISEL-TRUE-NEXT: ld r0, 16(r1)110; CHECK-GEN-ISEL-TRUE-NEXT: mtlr r0111; CHECK-GEN-ISEL-TRUE-NEXT: blr112; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_15: # %cond.false.i113; CHECK-GEN-ISEL-TRUE-NEXT: addis r3, r2, .L_MergedGlobals@toc@ha114; CHECK-GEN-ISEL-TRUE-NEXT: addi r5, r3, .L_MergedGlobals@toc@l115; CHECK-GEN-ISEL-TRUE-NEXT: addi r3, r5, 3116; CHECK-GEN-ISEL-TRUE-NEXT: addi r4, r5, 134117; CHECK-GEN-ISEL-TRUE-NEXT: addi r6, r5, 38118; CHECK-GEN-ISEL-TRUE-NEXT: li r5, 225119; CHECK-GEN-ISEL-TRUE-NEXT: bl __assert_fail120; CHECK-GEN-ISEL-TRUE-NEXT: nop121; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_16: # %if.then9122; CHECK-GEN-ISEL-TRUE-NEXT: li r3, 1123; CHECK-GEN-ISEL-TRUE-NEXT: bl exit124; CHECK-GEN-ISEL-TRUE-NEXT: nop125;126; CHECK-LABEL: _Z3fn1N4llvm9StringRefE:127; CHECK: # %bb.0: # %entry128; CHECK-NEXT: mflr r0129; CHECK-NEXT: stdu r1, -32(r1)130; CHECK-NEXT: std r0, 48(r1)131; CHECK-NEXT: .cfi_def_cfa_offset 32132; CHECK-NEXT: .cfi_offset lr, 16133; CHECK-NEXT: # implicit-def: $x5134; CHECK-NEXT: b .LBB0_2135; CHECK-NEXT: .p2align 4136; CHECK-NEXT: .LBB0_1: # %_ZNK4llvm9StringRef6substrEmm.exit137; CHECK-NEXT: #138; CHECK-NEXT: addi r4, r4, -1139; CHECK-NEXT: addi r3, r3, 1140; CHECK-NEXT: .LBB0_2: # %while.cond.outer141; CHECK-NEXT: # =>This Loop Header: Depth=1142; CHECK-NEXT: # Child Loop BB0_5 Depth 2143; CHECK-NEXT: # Child Loop BB0_9 Depth 2144; CHECK-NEXT: cmpldi r5, 0145; CHECK-NEXT: beq cr0, .LBB0_9146; CHECK-NEXT: # %bb.3: # %while.cond.preheader147; CHECK-NEXT: #148; CHECK-NEXT: cmpldi r4, 0149; CHECK-NEXT: bne+ cr0, .LBB0_5150; CHECK-NEXT: b .LBB0_20151; CHECK-NEXT: .p2align 5152; CHECK-NEXT: .LBB0_4: # %if.then4153; CHECK-NEXT: #154; CHECK-NEXT: add r3, r3, r6155; CHECK-NEXT: sub. r4, r4, r6156; CHECK-NEXT: beq- cr0, .LBB0_20157; CHECK-NEXT: .LBB0_5: # %_ZNK4llvm9StringRefixEm.exit158; CHECK-NEXT: # Parent Loop BB0_2 Depth=1159; CHECK-NEXT: # => This Inner Loop Header: Depth=2160; CHECK-NEXT: lbz r6, 0(r3)161; CHECK-NEXT: cmplwi r6, 92162; CHECK-NEXT: bne cr0, .LBB0_15163; CHECK-NEXT: # %bb.6: # %if.then4164; CHECK-NEXT: #165; CHECK-NEXT: cmpldi r4, 2166; CHECK-NEXT: mr r6, r4167; CHECK-NEXT: blt cr0, .LBB0_4168; CHECK-NEXT: # %bb.7: # %if.then4169; CHECK-NEXT: #170; CHECK-NEXT: li r6, 2171; CHECK-NEXT: b .LBB0_4172; CHECK-NEXT: .p2align 5173; CHECK-NEXT: .LBB0_8: # %if.then4.us174; CHECK-NEXT: #175; CHECK-NEXT: add r3, r3, r5176; CHECK-NEXT: sub r4, r4, r5177; CHECK-NEXT: .LBB0_9: # %while.cond.us178; CHECK-NEXT: # Parent Loop BB0_2 Depth=1179; CHECK-NEXT: # => This Inner Loop Header: Depth=2180; CHECK-NEXT: cmpldi r4, 2181; CHECK-NEXT: bge cr0, .LBB0_11182; CHECK-NEXT: # %bb.10: # %if.end.us183; CHECK-NEXT: #184; CHECK-NEXT: cmpldi cr1, r4, 0185; CHECK-NEXT: bne+ cr1, .LBB0_12186; CHECK-NEXT: b .LBB0_20187; CHECK-NEXT: .p2align 5188; CHECK-NEXT: .LBB0_11: # %if.end.i.i.us189; CHECK-NEXT: #190; CHECK-NEXT: lhz r5, 0(r3)191; CHECK-NEXT: cmplwi cr1, r5, 23901192; CHECK-NEXT: beq cr1, .LBB0_19193; CHECK-NEXT: .LBB0_12: # %_ZNK4llvm9StringRefixEm.exit.us194; CHECK-NEXT: #195; CHECK-NEXT: lbz r5, 0(r3)196; CHECK-NEXT: cmplwi cr1, r5, 92197; CHECK-NEXT: bne cr1, .LBB0_17198; CHECK-NEXT: # %bb.13: # %if.then4.us199; CHECK-NEXT: #200; CHECK-NEXT: mr r5, r4201; CHECK-NEXT: bc 12, lt, .LBB0_8202; CHECK-NEXT: # %bb.14: # %if.then4.us203; CHECK-NEXT: #204; CHECK-NEXT: li r5, 2205; CHECK-NEXT: b .LBB0_8206; CHECK-NEXT: .p2align 4207; CHECK-NEXT: .LBB0_15: # %_ZNK4llvm9StringRefixEm.exit208; CHECK-NEXT: #209; CHECK-NEXT: cmplwi r6, 93210; CHECK-NEXT: bne cr0, .LBB0_1211; CHECK-NEXT: # %bb.16: # %if.end10212; CHECK-NEXT: #213; CHECK-NEXT: addi r5, r5, -1214; CHECK-NEXT: b .LBB0_1215; CHECK-NEXT: .p2align 4216; CHECK-NEXT: .LBB0_17: # %_ZNK4llvm9StringRefixEm.exit.us217; CHECK-NEXT: #218; CHECK-NEXT: cmplwi r5, 93219; CHECK-NEXT: beq cr0, .LBB0_21220; CHECK-NEXT: # %bb.18: # %_ZNK4llvm9StringRef6substrEmm.exit.loopexit221; CHECK-NEXT: #222; CHECK-NEXT: li r5, 0223; CHECK-NEXT: b .LBB0_1224; CHECK-NEXT: .LBB0_19: # %if.then225; CHECK-NEXT: addi r1, r1, 32226; CHECK-NEXT: ld r0, 16(r1)227; CHECK-NEXT: mtlr r0228; CHECK-NEXT: blr229; CHECK-NEXT: .LBB0_20: # %cond.false.i230; CHECK-NEXT: addis r3, r2, .L_MergedGlobals@toc@ha231; CHECK-NEXT: addi r5, r3, .L_MergedGlobals@toc@l232; CHECK-NEXT: addi r3, r5, 3233; CHECK-NEXT: addi r4, r5, 134234; CHECK-NEXT: addi r6, r5, 38235; CHECK-NEXT: li r5, 225236; CHECK-NEXT: bl __assert_fail237; CHECK-NEXT: nop238; CHECK-NEXT: .LBB0_21: # %if.then9239; CHECK-NEXT: li r3, 1240; CHECK-NEXT: bl exit241; CHECK-NEXT: nop242entry:243 %Str.coerce.fca.0.extract = extractvalue [2 x i64] %Str.coerce, 0244 %Str.coerce.fca.1.extract = extractvalue [2 x i64] %Str.coerce, 1245 br label %while.cond.outer246while.cond.outer:247 %Str.sroa.0.0.ph = phi i64 [ %8, %_ZNK4llvm9StringRef6substrEmm.exit ], [ %Str.coerce.fca.0.extract, %entry ]248 %.sink.ph = phi i64 [ %sub.i, %_ZNK4llvm9StringRef6substrEmm.exit ], [ %Str.coerce.fca.1.extract, %entry ]249 %BracketDepth.0.ph = phi i64 [ %BracketDepth.1, %_ZNK4llvm9StringRef6substrEmm.exit ], [ undef, %entry ]250 %cmp65 = icmp eq i64 %BracketDepth.0.ph, 0251 br i1 %cmp65, label %while.cond.us.preheader, label %while.cond.preheader252while.cond.us.preheader:253 br label %while.cond.us254while.cond.preheader:255 %cmp.i34129 = icmp eq i64 %.sink.ph, 0256 br i1 %cmp.i34129, label %cond.false.i.loopexit135, label %_ZNK4llvm9StringRefixEm.exit.preheader257_ZNK4llvm9StringRefixEm.exit.preheader:258 br label %_ZNK4llvm9StringRefixEm.exit259while.cond.us:260 %Str.sroa.0.0.us = phi i64 [ %3, %_ZNK4llvm9StringRef6substrEmm.exit50.us ], [ %Str.sroa.0.0.ph, %while.cond.us.preheader ]261 %.sink.us = phi i64 [ %sub.i41.us, %_ZNK4llvm9StringRef6substrEmm.exit50.us ], [ %.sink.ph, %while.cond.us.preheader ]262 %cmp.i30.us = icmp ult i64 %.sink.us, 2263 br i1 %cmp.i30.us, label %if.end.us, label %if.end.i.i.us264if.end.i.i.us:265 %0 = inttoptr i64 %Str.sroa.0.0.us to ptr266 %call.i.i.us = tail call signext i32 @memcmp(ptr %0, ptr @.str, i64 2)267 %phitmp.i.us = icmp eq i32 %call.i.i.us, 0268 br i1 %phitmp.i.us, label %if.then, label %_ZNK4llvm9StringRefixEm.exit.us269if.end.us:270 %cmp.i34.us = icmp eq i64 %.sink.us, 0271 br i1 %cmp.i34.us, label %cond.false.i.loopexit, label %_ZNK4llvm9StringRefixEm.exit.us272_ZNK4llvm9StringRefixEm.exit.us:273 %1 = inttoptr i64 %Str.sroa.0.0.us to ptr274 %2 = load i8, ptr %1, align 1275 switch i8 %2, label %_ZNK4llvm9StringRef6substrEmm.exit.loopexit [276 i8 92, label %if.then4.us277 i8 93, label %if.then9278 ]279if.then4.us:280 %.sroa.speculated12.i38.us = select i1 %cmp.i30.us, i64 %.sink.us, i64 2281 %add.ptr.i40.us = getelementptr inbounds i8, ptr %1, i64 %.sroa.speculated12.i38.us282 %sub.i41.us = sub i64 %.sink.us, %.sroa.speculated12.i38.us283 %tobool.i.i44.us = icmp ne ptr %add.ptr.i40.us, null284 %cmp.i4.i45.us = icmp eq i64 %sub.i41.us, 0285 %or.cond.i.i46.us = or i1 %tobool.i.i44.us, %cmp.i4.i45.us286 br i1 %or.cond.i.i46.us, label %_ZNK4llvm9StringRef6substrEmm.exit50.us, label %cond.false.i.i47.loopexit287_ZNK4llvm9StringRef6substrEmm.exit50.us:288 %3 = ptrtoint ptr %add.ptr.i40.us to i64289 br label %while.cond.us290if.then:291 ret i64 undef292cond.false.i.loopexit:293 br label %cond.false.i294cond.false.i.loopexit134:295 br label %cond.false.i296cond.false.i.loopexit135:297 br label %cond.false.i298cond.false.i:299 tail call void @__assert_fail(ptr @.str.1, ptr @.str.2, i32 zeroext 225, ptr @__PRETTY_FUNCTION__._ZNK4llvm9StringRefixEm)300 unreachable301_ZNK4llvm9StringRefixEm.exit:302 %.sink131 = phi i64 [ %sub.i41, %_ZNK4llvm9StringRef6substrEmm.exit50 ], [ %.sink.ph, %_ZNK4llvm9StringRefixEm.exit.preheader ]303 %Str.sroa.0.0130 = phi i64 [ %6, %_ZNK4llvm9StringRef6substrEmm.exit50 ], [ %Str.sroa.0.0.ph, %_ZNK4llvm9StringRefixEm.exit.preheader ]304 %4 = inttoptr i64 %Str.sroa.0.0130 to ptr305 %5 = load i8, ptr %4, align 1306 switch i8 %5, label %_ZNK4llvm9StringRef6substrEmm.exit.loopexit132 [307 i8 92, label %if.then4308 i8 93, label %if.end10309 ]310if.then4:311 %cmp.i.i37 = icmp ult i64 %.sink131, 2312 %.sroa.speculated12.i38 = select i1 %cmp.i.i37, i64 %.sink131, i64 2313 %add.ptr.i40 = getelementptr inbounds i8, ptr %4, i64 %.sroa.speculated12.i38314 %sub.i41 = sub i64 %.sink131, %.sroa.speculated12.i38315 %tobool.i.i44 = icmp ne ptr %add.ptr.i40, null316 %cmp.i4.i45 = icmp eq i64 %sub.i41, 0317 %or.cond.i.i46 = or i1 %tobool.i.i44, %cmp.i4.i45318 br i1 %or.cond.i.i46, label %_ZNK4llvm9StringRef6substrEmm.exit50, label %cond.false.i.i47.loopexit133319cond.false.i.i47.loopexit:320 br label %cond.false.i.i47321cond.false.i.i47.loopexit133:322 br label %cond.false.i.i47323cond.false.i.i47:324 tail call void @__assert_fail(ptr @.str.3, ptr @.str.2, i32 zeroext 90, ptr @__PRETTY_FUNCTION__._ZN4llvm9StringRefC2EPKcm)325 unreachable326_ZNK4llvm9StringRef6substrEmm.exit50:327 %6 = ptrtoint ptr %add.ptr.i40 to i64328 %cmp.i34 = icmp eq i64 %sub.i41, 0329 br i1 %cmp.i34, label %cond.false.i.loopexit134, label %_ZNK4llvm9StringRefixEm.exit330if.then9:331 tail call void @exit(i32 signext 1)332 unreachable333if.end10:334 %dec = add i64 %BracketDepth.0.ph, -1335 br label %_ZNK4llvm9StringRef6substrEmm.exit336_ZNK4llvm9StringRef6substrEmm.exit.loopexit:337 br label %_ZNK4llvm9StringRef6substrEmm.exit338_ZNK4llvm9StringRef6substrEmm.exit.loopexit132:339 br label %_ZNK4llvm9StringRef6substrEmm.exit340_ZNK4llvm9StringRef6substrEmm.exit:341 %.sink76 = phi i64 [ %.sink131, %if.end10 ], [ %.sink.us, %_ZNK4llvm9StringRef6substrEmm.exit.loopexit ], [ %.sink131, %_ZNK4llvm9StringRef6substrEmm.exit.loopexit132 ]342 %7 = phi ptr [ %4, %if.end10 ], [ %1, %_ZNK4llvm9StringRef6substrEmm.exit.loopexit ], [ %4, %_ZNK4llvm9StringRef6substrEmm.exit.loopexit132 ]343 %BracketDepth.1 = phi i64 [ %dec, %if.end10 ], [ 0, %_ZNK4llvm9StringRef6substrEmm.exit.loopexit ], [ %BracketDepth.0.ph, %_ZNK4llvm9StringRef6substrEmm.exit.loopexit132 ]344 %sub.i = add i64 %.sink76, -1345 %add.ptr.i = getelementptr inbounds i8, ptr %7, i64 1346 %8 = ptrtoint ptr %add.ptr.i to i64347 br label %while.cond.outer348 349; Unecessary ISEL (all the registers are the same) is always removed350}351 352 353 354declare void @exit(i32 signext)355declare signext i32 @memcmp(ptr nocapture, ptr nocapture, i64)356declare void @__assert_fail(ptr, ptr, i32 zeroext, ptr)357