| ; RUN: opt -S -indvars -loop-idiom < %s |
| ; PR14214 |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @quote_arg() nounwind { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %for.inc, %entry |
| %backslashes.0 = phi i32 [ undef, %entry ], [ %backslashes.2, %for.inc ] |
| %p.0 = phi i8* [ undef, %entry ], [ %incdec.ptr3, %for.inc ] |
| %q.0 = phi i8* [ undef, %entry ], [ %q.2, %for.inc ] |
| %0 = load i8* %p.0, align 1 |
| switch i8 %0, label %while.cond.preheader [ |
| i8 0, label %for.cond4.preheader |
| i8 92, label %for.inc |
| ] |
| |
| while.cond.preheader: ; preds = %for.cond |
| %tobool210 = icmp eq i32 %backslashes.0, 0 |
| br i1 %tobool210, label %for.inc.loopexit, label %while.body.lr.ph |
| |
| while.body.lr.ph: ; preds = %while.cond.preheader |
| %1 = add i32 %backslashes.0, -1 |
| %2 = zext i32 %1 to i64 |
| br label %while.body |
| |
| for.cond4.preheader: ; preds = %for.cond |
| %tobool57 = icmp eq i32 %backslashes.0, 0 |
| br i1 %tobool57, label %for.end10, label %for.body6.lr.ph |
| |
| for.body6.lr.ph: ; preds = %for.cond4.preheader |
| br label %for.body6 |
| |
| while.body: ; preds = %while.body.lr.ph, %while.body |
| %q.112 = phi i8* [ %q.0, %while.body.lr.ph ], [ %incdec.ptr, %while.body ] |
| %backslashes.111 = phi i32 [ %backslashes.0, %while.body.lr.ph ], [ %dec, %while.body ] |
| %incdec.ptr = getelementptr inbounds i8* %q.112, i64 1 |
| store i8 92, i8* %incdec.ptr, align 1 |
| %dec = add nsw i32 %backslashes.111, -1 |
| %tobool2 = icmp eq i32 %dec, 0 |
| br i1 %tobool2, label %while.cond.for.inc.loopexit_crit_edge, label %while.body |
| |
| while.cond.for.inc.loopexit_crit_edge: ; preds = %while.body |
| %scevgep.sum = add i64 %2, 1 |
| %scevgep13 = getelementptr i8* %q.0, i64 %scevgep.sum |
| br label %for.inc.loopexit |
| |
| for.inc.loopexit: ; preds = %while.cond.for.inc.loopexit_crit_edge, %while.cond.preheader |
| %q.1.lcssa = phi i8* [ %scevgep13, %while.cond.for.inc.loopexit_crit_edge ], [ %q.0, %while.cond.preheader ] |
| br label %for.inc |
| |
| for.inc: ; preds = %for.inc.loopexit, %for.cond |
| %backslashes.2 = phi i32 [ %backslashes.0, %for.cond ], [ 0, %for.inc.loopexit ] |
| %q.2 = phi i8* [ %q.0, %for.cond ], [ %q.1.lcssa, %for.inc.loopexit ] |
| %incdec.ptr3 = getelementptr inbounds i8* %p.0, i64 1 |
| br label %for.cond |
| |
| for.body6: ; preds = %for.body6.lr.ph, %for.body6 |
| %q.39 = phi i8* [ %q.0, %for.body6.lr.ph ], [ %incdec.ptr7, %for.body6 ] |
| %backslashes.38 = phi i32 [ %backslashes.0, %for.body6.lr.ph ], [ %dec9, %for.body6 ] |
| %incdec.ptr7 = getelementptr inbounds i8* %q.39, i64 1 |
| store i8 92, i8* %incdec.ptr7, align 1 |
| %dec9 = add nsw i32 %backslashes.38, -1 |
| %tobool5 = icmp eq i32 %dec9, 0 |
| br i1 %tobool5, label %for.cond4.for.end10_crit_edge, label %for.body6 |
| |
| for.cond4.for.end10_crit_edge: ; preds = %for.body6 |
| br label %for.end10 |
| |
| for.end10: ; preds = %for.cond4.for.end10_crit_edge, %for.cond4.preheader |
| ret i32 undef |
| } |
