<div dir="ltr">Hrm. I hit the commit button before adding more to the commit message, apologies.<div><br></div><div>Basically here we're looking at a case where we weren't paying attention to a loop that read CTR and modified it around. The testcase isn't particularly reducible at the moment as bugpoint dies a horrible death trying. I've debugged it a bit, but thought it better to get the ppc fix in faster and try to reduce later.</div><div><br></div><div>(The bugpoint problem FWIW: </div><div><br></div><div><div>Checking for crash with only these blocks: entry if.then if.then.4 if.then.6 if.else if.else.9 if.then.11 if.else.13 if.else.15 if.then.18... <44 total>: error: Unknown attribute kind (45)</div></div><div>)</div><div><br></div><div>-eric</div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Sep 8, 2015 at 3:16 PM Eric Christopher via llvm-commits <<a href="mailto:llvm-commits@lists.llvm.org">llvm-commits@lists.llvm.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: echristo<br>
Date: Tue Sep 8 17:14:58 2015<br>
New Revision: 247083<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=247083&view=rev" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project?rev=247083&view=rev</a><br>
Log:<br>
Fix the PPC CTR Loop pass to look for calls to the intrinsics that<br>
read CTR and count them as reading the CTR.<br>
<br>
Added:<br>
llvm/trunk/test/CodeGen/PowerPC/ctrloop-intrin.ll<br>
Modified:<br>
llvm/trunk/lib/Target/PowerPC/PPCCTRLoops.cpp<br>
<br>
Modified: llvm/trunk/lib/Target/PowerPC/PPCCTRLoops.cpp<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCCTRLoops.cpp?rev=247083&r1=247082&r2=247083&view=diff" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCCTRLoops.cpp?rev=247083&r1=247082&r2=247083&view=diff</a><br>
==============================================================================<br>
--- llvm/trunk/lib/Target/PowerPC/PPCCTRLoops.cpp (original)<br>
+++ llvm/trunk/lib/Target/PowerPC/PPCCTRLoops.cpp Tue Sep 8 17:14:58 2015<br>
@@ -239,6 +239,11 @@ bool PPCCTRLoops::mightUseCTR(const Trip<br>
if (F->getIntrinsicID() != Intrinsic::not_intrinsic) {<br>
switch (F->getIntrinsicID()) {<br>
default: continue;<br>
+ // If we have a call to ppc_is_decremented_ctr_nonzero, or ppc_mtctr<br>
+ // we're definitely using CTR.<br>
+ case Intrinsic::ppc_is_decremented_ctr_nonzero:<br>
+ case Intrinsic::ppc_mtctr:<br>
+ return true;<br>
<br>
// VisualStudio defines setjmp as _setjmp<br>
#if defined(_MSC_VER) && defined(setjmp) && \<br>
@@ -426,6 +431,7 @@ bool PPCCTRLoops::convertToCTRLoop(Loop<br>
// Process nested loops first.<br>
for (Loop::iterator I = L->begin(), E = L->end(); I != E; ++I) {<br>
MadeChange |= convertToCTRLoop(*I);<br>
+ DEBUG(dbgs() << "Nested loop converted\n");<br>
}<br>
<br>
// If a nested loop has been converted, then we can't convert this loop.<br>
<br>
Added: llvm/trunk/test/CodeGen/PowerPC/ctrloop-intrin.ll<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/ctrloop-intrin.ll?rev=247083&view=auto" rel="noreferrer" target="_blank">http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/ctrloop-intrin.ll?rev=247083&view=auto</a><br>
==============================================================================<br>
--- llvm/trunk/test/CodeGen/PowerPC/ctrloop-intrin.ll (added)<br>
+++ llvm/trunk/test/CodeGen/PowerPC/ctrloop-intrin.ll Tue Sep 8 17:14:58 2015<br>
@@ -0,0 +1,349 @@<br>
+; RUN: llc < %s<br>
+; ModuleID = 'new.bc'<br>
+target datalayout = "e-m:e-i64:64-n32:64"<br>
+target triple = "powerpc64le--linux-gnu"<br>
+<br>
+@.str.87 = external hidden unnamed_addr constant [5 x i8], align 1<br>
+@.str.1.88 = external hidden unnamed_addr constant [4 x i8], align 1<br>
+@.str.2.89 = external hidden unnamed_addr constant [5 x i8], align 1<br>
+@.str.3.90 = external hidden unnamed_addr constant [4 x i8], align 1<br>
+@.str.4.91 = external hidden unnamed_addr constant [14 x i8], align 1<br>
+@.str.5.92 = external hidden unnamed_addr constant [13 x i8], align 1<br>
+@.str.6.93 = external hidden unnamed_addr constant [10 x i8], align 1<br>
+@.str.7.94 = external hidden unnamed_addr constant [9 x i8], align 1<br>
+@.str.8.95 = external hidden unnamed_addr constant [2 x i8], align 1<br>
+@.str.9.96 = external hidden unnamed_addr constant [2 x i8], align 1<br>
+@.str.10.97 = external hidden unnamed_addr constant [3 x i8], align 1<br>
+@.str.11.98 = external hidden unnamed_addr constant [3 x i8], align 1<br>
+<br>
+; Function Attrs: nounwind<br>
+declare void @llvm.lifetime.start(i64, i8* nocapture) #0<br>
+<br>
+; Function Attrs: nounwind<br>
+declare void @llvm.lifetime.end(i64, i8* nocapture) #0<br>
+<br>
+; Function Attrs: nounwind<br>
+declare i8* @halide_string_to_string(i8*, i8*, i8*) #1<br>
+<br>
+; Function Attrs: nounwind<br>
+declare i8* @halide_int64_to_string(i8*, i8*, i64, i32) #1<br>
+<br>
+; Function Attrs: nounwind<br>
+define weak i8* @halide_double_to_string(i8* %dst, i8* %end, double %arg, i32 %scientific) #1 {<br>
+entry:<br>
+ %arg.addr = alloca double, align 8<br>
+ %bits = alloca i64, align 8<br>
+ %buf = alloca [512 x i8], align 1<br>
+ store double %arg, double* %arg.addr, align 8, !tbaa !4<br>
+ %0 = bitcast i64* %bits to i8*<br>
+ call void @llvm.lifetime.start(i64 8, i8* %0) #0<br>
+ store i64 0, i64* %bits, align 8, !tbaa !8<br>
+ %1 = bitcast double* %arg.addr to i8*<br>
+ %call = call i8* @memcpy(i8* %0, i8* %1, i64 8) #2<br>
+ %2 = load i64, i64* %bits, align 8, !tbaa !8<br>
+ %and = and i64 %2, 4503599627370495<br>
+ %shr = lshr i64 %2, 52<br>
+ %<a href="http://shr.tr" rel="noreferrer" target="_blank">shr.tr</a> = trunc i64 %shr to i32<br>
+ %conv = and i32 %<a href="http://shr.tr" rel="noreferrer" target="_blank">shr.tr</a>, 2047<br>
+ %shr2 = lshr i64 %2, 63<br>
+ %conv3 = trunc i64 %shr2 to i32<br>
+ %cmp = icmp eq i32 %conv, 2047<br>
+ br i1 %cmp, label %if.then, label %if.else.15<br>
+<br>
+if.then: ; preds = %entry<br>
+ %tobool = icmp eq i64 %and, 0<br>
+ %tobool5 = icmp ne i32 %conv3, 0<br>
+ br i1 %tobool, label %if.else.9, label %if.then.4<br>
+<br>
+if.then.4: ; preds = %if.then<br>
+ br i1 %tobool5, label %if.then.6, label %if.else<br>
+<br>
+if.then.6: ; preds = %if.then.4<br>
+ %call7 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.87, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else: ; preds = %if.then.4<br>
+ %call8 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1.88, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.9: ; preds = %if.then<br>
+ br i1 %tobool5, label %if.then.11, label %if.else.13<br>
+<br>
+if.then.11: ; preds = %if.else.9<br>
+ %call12 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.2.89, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.13: ; preds = %if.else.9<br>
+ %call14 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3.90, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.15: ; preds = %entry<br>
+ %cmp16 = icmp eq i32 %conv, 0<br>
+ %cmp17 = icmp eq i64 %and, 0<br>
+ %or.cond = and i1 %cmp17, %cmp16<br>
+ br i1 %or.cond, label %if.then.18, label %if.end.32<br>
+<br>
+if.then.18: ; preds = %if.else.15<br>
+ %tobool19 = icmp eq i32 %scientific, 0<br>
+ %tobool21 = icmp ne i32 %conv3, 0<br>
+ br i1 %tobool19, label %if.else.26, label %if.then.20<br>
+<br>
+if.then.20: ; preds = %if.then.18<br>
+ br i1 %tobool21, label %if.then.22, label %if.else.24<br>
+<br>
+if.then.22: ; preds = %if.then.20<br>
+ %call23 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([14 x i8], [14 x i8]* @.str.4.91, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.24: ; preds = %if.then.20<br>
+ %call25 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([13 x i8], [13 x i8]* @.str.5.92, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.26: ; preds = %if.then.18<br>
+ br i1 %tobool21, label %if.then.28, label %if.else.30<br>
+<br>
+if.then.28: ; preds = %if.else.26<br>
+ %call29 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([10 x i8], [10 x i8]* @.str.6.93, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.30: ; preds = %if.else.26<br>
+ %call31 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str.7.94, i64 0, i64 0)) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.end.32: ; preds = %if.else.15<br>
+ %tobool33 = icmp eq i32 %conv3, 0<br>
+ br i1 %tobool33, label %if.end.37, label %if.then.34<br>
+<br>
+if.then.34: ; preds = %if.end.32<br>
+ %call35 = call i8* @halide_string_to_string(i8* %dst, i8* %end, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.8.95, i64 0, i64 0)) #3<br>
+ %sub36 = fsub double -0.000000e+00, %arg<br>
+ store double %sub36, double* %arg.addr, align 8, !tbaa !4<br>
+ br label %if.end.37<br>
+<br>
+if.end.37: ; preds = %if.then.34, %if.end.32<br>
+ %.pr = phi double [ %sub36, %if.then.34 ], [ %arg, %if.end.32 ]<br>
+ %dst.addr.0 = phi i8* [ %call35, %if.then.34 ], [ %dst, %if.end.32 ]<br>
+ %tobool38 = icmp eq i32 %scientific, 0<br>
+ br i1 %tobool38, label %if.else.62, label %while.condthread-pre-split<br>
+<br>
+while.condthread-pre-split: ; preds = %if.end.37<br>
+ %cmp40.261 = fcmp olt double %.pr, 1.000000e+00<br>
+ br i1 %cmp40.261, label %while.body, label %while.cond.41thread-pre-split<br>
+<br>
+while.body: ; preds = %while.body, %while.condthread-pre-split<br>
+ %exponent_base_10.0262 = phi i32 [ %dec, %while.body ], [ 0, %while.condthread-pre-split ]<br>
+ %3 = phi double [ %mul, %while.body ], [ %.pr, %while.condthread-pre-split ]<br>
+ %mul = fmul double %3, 1.000000e+01<br>
+ %dec = add nsw i32 %exponent_base_10.0262, -1<br>
+ %cmp40 = fcmp olt double %mul, 1.000000e+00<br>
+ br i1 %cmp40, label %while.body, label %while.cond.while.cond.41thread-pre-split_crit_edge<br>
+<br>
+while.cond.while.cond.41thread-pre-split_crit_edge: ; preds = %while.body<br>
+ store double %mul, double* %arg.addr, align 8, !tbaa !4<br>
+ br label %while.cond.41thread-pre-split<br>
+<br>
+while.cond.41thread-pre-split: ; preds = %while.cond.while.cond.41thread-pre-split_crit_edge, %while.condthread-pre-split<br>
+ %.pr246 = phi double [ %mul, %while.cond.while.cond.41thread-pre-split_crit_edge ], [ %.pr, %while.condthread-pre-split ]<br>
+ %exponent_base_10.0.lcssa = phi i32 [ %dec, %while.cond.while.cond.41thread-pre-split_crit_edge ], [ 0, %while.condthread-pre-split ]<br>
+ %cmp42.257 = fcmp ult double %.pr246, 1.000000e+01<br>
+ br i1 %cmp42.257, label %while.end.44, label %while.body.43<br>
+<br>
+while.body.43: ; preds = %while.body.43, %while.cond.41thread-pre-split<br>
+ %exponent_base_10.1258 = phi i32 [ %inc, %while.body.43 ], [ %exponent_base_10.0.lcssa, %while.cond.41thread-pre-split ]<br>
+ %4 = phi double [ %div, %while.body.43 ], [ %.pr246, %while.cond.41thread-pre-split ]<br>
+ %div = fdiv double %4, 1.000000e+01<br>
+ %inc = add nsw i32 %exponent_base_10.1258, 1<br>
+ %cmp42 = fcmp ult double %div, 1.000000e+01<br>
+ br i1 %cmp42, label %while.cond.41.while.end.44_crit_edge, label %while.body.43<br>
+<br>
+while.cond.41.while.end.44_crit_edge: ; preds = %while.body.43<br>
+ store double %div, double* %arg.addr, align 8, !tbaa !4<br>
+ br label %while.end.44<br>
+<br>
+while.end.44: ; preds = %while.cond.41.while.end.44_crit_edge, %while.cond.41thread-pre-split<br>
+ %exponent_base_10.1.lcssa = phi i32 [ %inc, %while.cond.41.while.end.44_crit_edge ], [ %exponent_base_10.0.lcssa, %while.cond.41thread-pre-split ]<br>
+ %.lcssa = phi double [ %div, %while.cond.41.while.end.44_crit_edge ], [ %.pr246, %while.cond.41thread-pre-split ]<br>
+ %mul45 = fmul double %.lcssa, 1.000000e+06<br>
+ %add = fadd double %mul45, 5.000000e-01<br>
+ %conv46 = fptoui double %add to i64<br>
+ %div47 = udiv i64 %conv46, 1000000<br>
+ %5 = mul i64 %div47, -1000000<br>
+ %sub49 = add i64 %conv46, %5<br>
+ %call50 = call i8* @halide_int64_to_string(i8* %dst.addr.0, i8* %end, i64 %div47, i32 1) #3<br>
+ %call51 = call i8* @halide_string_to_string(i8* %call50, i8* %end, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.9.96, i64 0, i64 0)) #3<br>
+ %call52 = call i8* @halide_int64_to_string(i8* %call51, i8* %end, i64 %sub49, i32 6) #3<br>
+ %cmp53 = icmp sgt i32 %exponent_base_10.1.lcssa, -1<br>
+ br i1 %cmp53, label %if.then.54, label %if.else.56<br>
+<br>
+if.then.54: ; preds = %while.end.44<br>
+ %call55 = call i8* @halide_string_to_string(i8* %call52, i8* %end, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.10.97, i64 0, i64 0)) #3<br>
+ br label %if.end.59<br>
+<br>
+if.else.56: ; preds = %while.end.44<br>
+ %call57 = call i8* @halide_string_to_string(i8* %call52, i8* %end, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.11.98, i64 0, i64 0)) #3<br>
+ %sub58 = sub nsw i32 0, %exponent_base_10.1.lcssa<br>
+ br label %if.end.59<br>
+<br>
+if.end.59: ; preds = %if.else.56, %if.then.54<br>
+ %exponent_base_10.2 = phi i32 [ %exponent_base_10.1.lcssa, %if.then.54 ], [ %sub58, %if.else.56 ]<br>
+ %dst.addr.1 = phi i8* [ %call55, %if.then.54 ], [ %call57, %if.else.56 ]<br>
+ %conv60 = sext i32 %exponent_base_10.2 to i64<br>
+ %call61 = call i8* @halide_int64_to_string(i8* %dst.addr.1, i8* %end, i64 %conv60, i32 2) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.else.62: ; preds = %if.end.37<br>
+ br i1 %cmp16, label %if.then.64, label %if.end.66<br>
+<br>
+if.then.64: ; preds = %if.else.62<br>
+ %call65 = call i8* @halide_double_to_string(i8* %dst.addr.0, i8* %end, double 0.000000e+00, i32 0) #3<br>
+ br label %cleanup.148<br>
+<br>
+if.end.66: ; preds = %if.else.62<br>
+ %add68 = or i64 %and, 4503599627370496<br>
+ %sub70 = add nsw i32 %conv, -1075<br>
+ %cmp71 = icmp ult i32 %conv, 1075<br>
+ br i1 %cmp71, label %if.then.72, label %if.end.105<br>
+<br>
+if.then.72: ; preds = %if.end.66<br>
+ %cmp73 = icmp slt i32 %sub70, -52<br>
+ br i1 %cmp73, label %if.end.84, label %if.else.76<br>
+<br>
+if.else.76: ; preds = %if.then.72<br>
+ %sub77 = sub nsw i32 1075, %conv<br>
+ %sh_prom = zext i32 %sub77 to i64<br>
+ %shr78 = lshr i64 %add68, %sh_prom<br>
+ %shl81 = shl i64 %shr78, %sh_prom<br>
+ %sub82 = sub i64 %add68, %shl81<br>
+ br label %if.end.84<br>
+<br>
+if.end.84: ; preds = %if.else.76, %if.then.72<br>
+ %integer_part.0 = phi i64 [ %shr78, %if.else.76 ], [ 0, %if.then.72 ]<br>
+ %<a href="http://f.0.in" rel="noreferrer" target="_blank">f.0.in</a> = phi i64 [ %sub82, %if.else.76 ], [ %add68, %if.then.72 ]<br>
+ %f.0 = uitofp i64 %<a href="http://f.0.in" rel="noreferrer" target="_blank">f.0.in</a> to double<br>
+ %conv85.244 = zext i32 %sub70 to i64<br>
+ %shl86 = shl i64 %conv85.244, 52<br>
+ %add88 = add i64 %shl86, 4696837146684686336<br>
+ %6 = bitcast i64 %add88 to double<br>
+ %mul90 = fmul double %6, %f.0<br>
+ %add91 = fadd double %mul90, 5.000000e-01<br>
+ %conv92 = fptoui double %add91 to i64<br>
+ %conv93 = uitofp i64 %conv92 to double<br>
+ %and96 = and i64 %conv92, 1<br>
+ %notlhs = fcmp oeq double %conv93, %add91<br>
+ %notrhs = icmp ne i64 %and96, 0<br>
+ %not.or.cond245 = and i1 %notrhs, %notlhs<br>
+ %dec99 = sext i1 %not.or.cond245 to i64<br>
+ %fractional_part.0 = add i64 %dec99, %conv92<br>
+ %cmp101 = icmp eq i64 %fractional_part.0, 1000000<br>
+ %inc103 = zext i1 %cmp101 to i64<br>
+ %inc103.integer_part.0 = add i64 %inc103, %integer_part.0<br>
+ %.fractional_part.0 = select i1 %cmp101, i64 0, i64 %fractional_part.0<br>
+ br label %if.end.105<br>
+<br>
+if.end.105: ; preds = %if.end.84, %if.end.66<br>
+ %integer_part.2 = phi i64 [ %inc103.integer_part.0, %if.end.84 ], [ %add68, %if.end.66 ]<br>
+ %integer_exponent.0 = phi i32 [ 0, %if.end.84 ], [ %sub70, %if.end.66 ]<br>
+ %fractional_part.2 = phi i64 [ %.fractional_part.0, %if.end.84 ], [ 0, %if.end.66 ]<br>
+ %7 = bitcast [512 x i8]* %buf to i8*<br>
+ call void @llvm.lifetime.start(i64 512, i8* %7) #0<br>
+ %add.ptr = getelementptr inbounds [512 x i8], [512 x i8]* %buf, i64 0, i64 512<br>
+ %add.ptr106 = getelementptr inbounds [512 x i8], [512 x i8]* %buf, i64 0, i64 480<br>
+ %call109 = call i8* @halide_int64_to_string(i8* %add.ptr106, i8* %add.ptr, i64 %integer_part.2, i32 1) #3<br>
+ %cmp110.252 = icmp sgt i32 %integer_exponent.0, 0<br>
+ br i1 %cmp110.252, label %for.cond.112.preheader, label %for.cond.cleanup<br>
+<br>
+for.cond.112.preheader: ; preds = %if.end.138, %if.end.105<br>
+ %i.0255 = phi i32 [ %inc140, %if.end.138 ], [ 0, %if.end.105 ]<br>
+ %int_part_ptr.0253 = phi i8* [ %int_part_ptr.1, %if.end.138 ], [ %add.ptr106, %if.end.105 ]<br>
+ %int_part_ptr.02534 = ptrtoint i8* %int_part_ptr.0253 to i64<br>
+ %cmp114.249 = icmp eq i8* %call109, %int_part_ptr.0253<br>
+ br i1 %cmp114.249, label %if.end.138, label %for.body.116.preheader<br>
+<br>
+for.body.116.preheader: ; preds = %for.cond.112.preheader<br>
+ %8 = sub i64 0, %int_part_ptr.02534<br>
+ %scevgep5 = getelementptr i8, i8* %call109, i64 %8<br>
+ %scevgep56 = ptrtoint i8* %scevgep5 to i64<br>
+ call void @llvm.ppc.mtctr.i64(i64 %scevgep56)<br>
+ br label %for.body.116<br>
+<br>
+for.cond.cleanup: ; preds = %if.end.138, %if.end.105<br>
+ %int_part_ptr.0.lcssa = phi i8* [ %add.ptr106, %if.end.105 ], [ %int_part_ptr.1, %if.end.138 ]<br>
+ %9 = bitcast [512 x i8]* %buf to i8*<br>
+ %call142 = call i8* @halide_string_to_string(i8* %dst.addr.0, i8* %end, i8* %int_part_ptr.0.lcssa) #3<br>
+ %call143 = call i8* @halide_string_to_string(i8* %call142, i8* %end, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str.9.96, i64 0, i64 0)) #3<br>
+ %call144 = call i8* @halide_int64_to_string(i8* %call143, i8* %end, i64 %fractional_part.2, i32 6) #3<br>
+ call void @llvm.lifetime.end(i64 512, i8* %9) #0<br>
+ br label %cleanup.148<br>
+<br>
+for.cond.cleanup.115: ; preds = %for.body.116<br>
+ br i1 %cmp125, label %if.then.136, label %if.end.138<br>
+<br>
+for.body.116: ; preds = %for.body.116, %for.body.116.preheader<br>
+ %<a href="http://call109.pn" rel="noreferrer" target="_blank">call109.pn</a> = phi i8* [ %p.0251, %for.body.116 ], [ %call109, %for.body.116.preheader ]<br>
+ %carry.0250 = phi i32 [ %carry.1, %for.body.116 ], [ 0, %for.body.116.preheader ]<br>
+ %call109.pn2 = ptrtoint i8* %<a href="http://call109.pn" rel="noreferrer" target="_blank">call109.pn</a> to i64<br>
+ %p.0251 = getelementptr inbounds i8, i8* %<a href="http://call109.pn" rel="noreferrer" target="_blank">call109.pn</a>, i64 -1<br>
+ %scevgep3 = getelementptr i8, i8* inttoptr (i64 -1 to i8*), i64 %call109.pn2<br>
+ %10 = load i8, i8* %scevgep3, align 1, !tbaa !10<br>
+ %sub118 = add i8 %10, -48<br>
+ %conv120 = sext i8 %sub118 to i32<br>
+ %mul121 = shl nsw i32 %conv120, 1<br>
+ %add122 = or i32 %mul121, %carry.0250<br>
+ %11 = trunc i32 %add122 to i8<br>
+ %cmp125 = icmp sgt i8 %11, 9<br>
+ %sub128 = add nsw i32 %add122, 246<br>
+ %carry.1 = zext i1 %cmp125 to i32<br>
+ %<a href="http://new_digit.0.in" rel="noreferrer" target="_blank">new_digit.0.in</a> = select i1 %cmp125, i32 %sub128, i32 %add122<br>
+ %add133 = add nsw i32 %<a href="http://new_digit.0.in" rel="noreferrer" target="_blank">new_digit.0.in</a>, 48<br>
+ %conv134 = trunc i32 %add133 to i8<br>
+ %scevgep = getelementptr i8, i8* inttoptr (i64 -1 to i8*), i64 %call109.pn2<br>
+ store i8 %conv134, i8* %scevgep, align 1, !tbaa !10<br>
+ %12 = call i1 @llvm.ppc.is.decremented.ctr.nonzero()<br>
+ br i1 %12, label %for.body.116, label %for.cond.cleanup.115<br>
+<br>
+if.then.136: ; preds = %for.cond.cleanup.115<br>
+ %incdec.ptr137 = getelementptr inbounds i8, i8* %int_part_ptr.0253, i64 -1<br>
+ store i8 49, i8* %incdec.ptr137, align 1, !tbaa !10<br>
+ br label %if.end.138<br>
+<br>
+if.end.138: ; preds = %if.then.136, %for.cond.cleanup.115, %for.cond.112.preheader<br>
+ %int_part_ptr.1 = phi i8* [ %incdec.ptr137, %if.then.136 ], [ %call109, %for.cond.112.preheader ], [ %int_part_ptr.0253, %for.cond.cleanup.115 ]<br>
+ %inc140 = add nuw nsw i32 %i.0255, 1<br>
+ %exitcond = icmp eq i32 %inc140, %integer_exponent.0<br>
+ br i1 %exitcond, label %for.cond.cleanup, label %for.cond.112.preheader<br>
+<br>
+cleanup.148: ; preds = %for.cond.cleanup, %if.then.64, %if.end.59, %if.else.30, %if.then.28, %if.else.24, %if.then.22, %if.else.13, %if.then.11, %if.else, %if.then.6<br>
+ %retval.1 = phi i8* [ %call7, %if.then.6 ], [ %call8, %if.else ], [ %call12, %if.then.11 ], [ %call14, %if.else.13 ], [ %call23, %if.then.22 ], [ %call25, %if.else.24 ], [ %call29, %if.then.28 ], [ %call31, %if.else.30 ], [ %call65, %if.then.64 ], [ %call61, %if.end.59 ], [ %call144, %for.cond.cleanup ]<br>
+ %13 = bitcast i64* %bits to i8*<br>
+ call void @llvm.lifetime.end(i64 8, i8* %13) #0<br>
+ ret i8* %retval.1<br>
+}<br>
+<br>
+; Function Attrs: nounwind<br>
+declare i8* @memcpy(i8*, i8* nocapture readonly, i64) #1<br>
+<br>
+; Function Attrs: nounwind<br>
+declare void @llvm.ppc.mtctr.i64(i64) #0<br>
+<br>
+; Function Attrs: nounwind<br>
+declare i1 @llvm.ppc.is.decremented.ctr.nonzero() #0<br>
+<br>
+attributes #0 = { nounwind }<br>
+attributes #1 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }<br>
+attributes #2 = { nounwind }<br>
+attributes #3 = { nounwind }<br>
+<br>
+!llvm.ident = !{!0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0, !0}<br>
+!llvm.module.flags = !{!1, !2, !3}<br>
+<br>
+!0 = !{!"clang version 3.7.0 (branches/release_37 246867) (llvm/branches/release_37 246866)"}<br>
+!1 = !{i32 2, !"halide_use_soft_float_abi", i32 0}<br>
+!2 = !{i32 2, !"halide_mcpu", !"pwr8"}<br>
+!3 = !{i32 2, !"halide_mattrs", !"+altivec,+vsx,+power8-altivec,+direct-move"}<br>
+!4 = !{!5, !5, i64 0}<br>
+!5 = !{!"double", !6, i64 0}<br>
+!6 = !{!"omnipotent char", !7, i64 0}<br>
+!7 = !{!"Simple C/C++ TBAA"}<br>
+!8 = !{!9, !9, i64 0}<br>
+!9 = !{!"long long", !6, i64 0}<br>
+!10 = !{!6, !6, i64 0}<br>
<br>
<br>
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</blockquote></div>