llvm-6502/test/Analysis/ScalarEvolution/sle.ll
David Blaikie 7c9c6ed761 [opaque pointer type] Add textual IR support for explicit type parameter to load instruction
Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00

28 lines
1.1 KiB
LLVM

; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
; ScalarEvolution should be able to use nsw information to prove that
; this loop has a finite trip count.
; CHECK: @le
; CHECK: Loop %for.body: backedge-taken count is %n
; CHECK: Loop %for.body: max backedge-taken count is 9223372036854775807
define void @le(i64 %n, double* nocapture %p) nounwind {
entry:
%cmp6 = icmp slt i64 %n, 0 ; <i1> [#uses=1]
br i1 %cmp6, label %for.end, label %for.body
for.body: ; preds = %for.body, %entry
%i = phi i64 [ %i.next, %for.body ], [ 0, %entry ] ; <i64> [#uses=2]
%arrayidx = getelementptr double, double* %p, i64 %i ; <double*> [#uses=2]
%t4 = load double, double* %arrayidx ; <double> [#uses=1]
%mul = fmul double %t4, 2.200000e+00 ; <double> [#uses=1]
store double %mul, double* %arrayidx
%i.next = add nsw i64 %i, 1 ; <i64> [#uses=2]
%cmp = icmp sgt i64 %i.next, %n ; <i1> [#uses=1]
br i1 %cmp, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
ret void
}