maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/Analysis/DependenceAnalysis/UsefulGEP.ll

52 lines
1.6 KiB
LLVM
Raw Normal View History

Fix a crash in Dependency Analysis. This crash in Dependency analysis is because we assume here that in case of UsefulGEP both source and destination have the same number of operands which may not be true. This incorrect assumption results in crash while populating Pairs. Fix the same. This crash was observed during lnt regression for code such as- struct s{ int A[10][10]; int C[10][10][10]; } S; void dep_constraint_crash_test(int k,int N) { for( int i=0;i<N;i++) for( int j=0;j<N;j++) S.A[0][0] = S.C[0][0][k]; } Review: http://reviews.llvm.org/D8162 llvm-svn: 231784
2015-03-10 21:31:03 +08:00
; RUN: opt < %s -analyze -basicaa -da
;; Check this doesn't crash.
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
;; struct s {
;; int A[10][10];
;; int C[10][10][10];
;; } S;
;; void dep_constraint_crash_test(int k,int N) {
;; for( int i=0;i<N;i++)
;; for( int j=0;j<N;j++)
;; S.A[0][0] = S.C[0][0][k];
;; }
%struct.s = type { [10 x [10 x i32]], [10 x [10 x [10 x i32]]] }
@S = common global %struct.s zeroinitializer
define void @dep_constraint_crash_test(i32 %k, i32 %N) {
entry:
%cmp12 = icmp sgt i32 %N, 0
br i1 %cmp12, label %for.cond1.preheader.lr.ph, label %for.end6
for.cond1.preheader.lr.ph:
%idxprom = sext i32 %k to i64
%arrayidx = getelementptr inbounds %struct.s, %struct.s* @S, i64 0, i32 1, i64 0, i64 0, i64 %idxprom
br label %for.body3.preheader
for.body3.preheader:
%i.013 = phi i32 [ 0, %for.cond1.preheader.lr.ph ], [ %inc5, %for.inc4 ]
br label %for.body3
for.body3:
%j.011 = phi i32 [ %inc, %for.body3 ], [ 0, %for.body3.preheader ]
%0 = load i32, i32* %arrayidx
[opaque pointer type] Add textual IR support for explicit type parameter to gep operator Similar to gep (r230786) and load (r230794) changes. Similar migration script can be used to update test cases, which successfully migrated all of LLVM and Polly, but about 4 test cases needed manually changes in Clang. (this script will read the contents of stdin and massage it into stdout - wrap it in the 'apply.sh' script shown in previous commits + xargs to apply it over a large set of test cases) import fileinput import sys import re rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL) def conv(match): line = match.group(1) line += match.group(4) line += ", " line += match.group(2) return line line = sys.stdin.read() off = 0 for match in re.finditer(rep, line): sys.stdout.write(line[off:match.start()]) sys.stdout.write(conv(match)) off = match.end() sys.stdout.write(line[off:]) llvm-svn: 232184
2015-03-14 02:20:45 +08:00
store i32 %0, i32* getelementptr inbounds (%struct.s, %struct.s* @S, i64 0, i32 0, i64 0, i64 0)
Fix a crash in Dependency Analysis. This crash in Dependency analysis is because we assume here that in case of UsefulGEP both source and destination have the same number of operands which may not be true. This incorrect assumption results in crash while populating Pairs. Fix the same. This crash was observed during lnt regression for code such as- struct s{ int A[10][10]; int C[10][10][10]; } S; void dep_constraint_crash_test(int k,int N) { for( int i=0;i<N;i++) for( int j=0;j<N;j++) S.A[0][0] = S.C[0][0][k]; } Review: http://reviews.llvm.org/D8162 llvm-svn: 231784
2015-03-10 21:31:03 +08:00
%inc = add nuw nsw i32 %j.011, 1
%exitcond = icmp eq i32 %inc, %N
br i1 %exitcond, label %for.inc4, label %for.body3
for.inc4:
%inc5 = add nuw nsw i32 %i.013, 1
%exitcond14 = icmp eq i32 %inc5, %N
br i1 %exitcond14, label %for.end6, label %for.body3.preheader
for.end6:
ret void
}