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6cd4d55f5b
I'm not entirely happy with this solution, but I don't see a smarter way currently. Fixes PR14214. llvm-svn: 167112
75 lines
3.3 KiB
LLVM
75 lines
3.3 KiB
LLVM
; RUN: opt -S -indvars -loop-idiom < %s
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; PR14214
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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"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @quote_arg() nounwind {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%backslashes.0 = phi i32 [ undef, %entry ], [ %backslashes.2, %for.inc ]
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%p.0 = phi i8* [ undef, %entry ], [ %incdec.ptr3, %for.inc ]
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%q.0 = phi i8* [ undef, %entry ], [ %q.2, %for.inc ]
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%0 = load i8* %p.0, align 1
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switch i8 %0, label %while.cond.preheader [
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i8 0, label %for.cond4.preheader
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i8 92, label %for.inc
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]
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while.cond.preheader: ; preds = %for.cond
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%tobool210 = icmp eq i32 %backslashes.0, 0
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br i1 %tobool210, label %for.inc.loopexit, label %while.body.lr.ph
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while.body.lr.ph: ; preds = %while.cond.preheader
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%1 = add i32 %backslashes.0, -1
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%2 = zext i32 %1 to i64
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br label %while.body
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for.cond4.preheader: ; preds = %for.cond
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%tobool57 = icmp eq i32 %backslashes.0, 0
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br i1 %tobool57, label %for.end10, label %for.body6.lr.ph
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for.body6.lr.ph: ; preds = %for.cond4.preheader
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br label %for.body6
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while.body: ; preds = %while.body.lr.ph, %while.body
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%q.112 = phi i8* [ %q.0, %while.body.lr.ph ], [ %incdec.ptr, %while.body ]
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%backslashes.111 = phi i32 [ %backslashes.0, %while.body.lr.ph ], [ %dec, %while.body ]
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%incdec.ptr = getelementptr inbounds i8* %q.112, i64 1
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store i8 92, i8* %incdec.ptr, align 1
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%dec = add nsw i32 %backslashes.111, -1
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%tobool2 = icmp eq i32 %dec, 0
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br i1 %tobool2, label %while.cond.for.inc.loopexit_crit_edge, label %while.body
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while.cond.for.inc.loopexit_crit_edge: ; preds = %while.body
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%scevgep.sum = add i64 %2, 1
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%scevgep13 = getelementptr i8* %q.0, i64 %scevgep.sum
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br label %for.inc.loopexit
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for.inc.loopexit: ; preds = %while.cond.for.inc.loopexit_crit_edge, %while.cond.preheader
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%q.1.lcssa = phi i8* [ %scevgep13, %while.cond.for.inc.loopexit_crit_edge ], [ %q.0, %while.cond.preheader ]
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br label %for.inc
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for.inc: ; preds = %for.inc.loopexit, %for.cond
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%backslashes.2 = phi i32 [ %backslashes.0, %for.cond ], [ 0, %for.inc.loopexit ]
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%q.2 = phi i8* [ %q.0, %for.cond ], [ %q.1.lcssa, %for.inc.loopexit ]
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%incdec.ptr3 = getelementptr inbounds i8* %p.0, i64 1
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br label %for.cond
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for.body6: ; preds = %for.body6.lr.ph, %for.body6
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%q.39 = phi i8* [ %q.0, %for.body6.lr.ph ], [ %incdec.ptr7, %for.body6 ]
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%backslashes.38 = phi i32 [ %backslashes.0, %for.body6.lr.ph ], [ %dec9, %for.body6 ]
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%incdec.ptr7 = getelementptr inbounds i8* %q.39, i64 1
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store i8 92, i8* %incdec.ptr7, align 1
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%dec9 = add nsw i32 %backslashes.38, -1
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%tobool5 = icmp eq i32 %dec9, 0
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br i1 %tobool5, label %for.cond4.for.end10_crit_edge, label %for.body6
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for.cond4.for.end10_crit_edge: ; preds = %for.body6
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br label %for.end10
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for.end10: ; preds = %for.cond4.for.end10_crit_edge, %for.cond4.preheader
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ret i32 undef
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}
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