; RUN: opt < %s -analyze -basicaa -globals-aa -da | FileCheck %s define void @i32_subscript(i32* %a) { entry: br label %for.body for.body: %i = phi i32 [ 0, %entry ], [ %i.inc, %for.body ] %a.addr = getelementptr i32, i32* %a, i32 %i %a.addr.2 = getelementptr i32, i32* %a, i32 5 %0 = load i32, i32* %a.addr, align 4 %1 = add i32 %0, 1 store i32 %1, i32* %a.addr.2, align 4 %i.inc = add nsw i32 %i, 1 %i.inc.ext = sext i32 %i to i64 %exitcond = icmp ne i64 %i.inc.ext, 100 br i1 %exitcond, label %for.body, label %for.end for.end: ret void } ; CHECK: none ; CHECK: anti ; CHECK: output ; Test for a bug, which caused an assert in ScalarEvolution because ; the Dependence Analyzer attempted to zero extend a type to a smaller ; type. ; void t(unsigned int *a, unsigned int n) { ; for (unsigned int i = 0; i != n; i++) { ; a[(unsigned short)i] = g; ; }} @g = common global i32 0, align 4 define void @t(i32* noalias %a, i32 %n) nounwind { entry: %cmp1 = icmp eq i32 %n, 0 br i1 %cmp1, label %for.end, label %for.body for.body: %i.02 = phi i32 [ %inc, %for.body ], [ 0, %entry ] %0 = load i32, i32* @g, align 4 %idxprom = and i32 %i.02, 65535 %arrayidx = getelementptr inbounds i32, i32* %a, i32 %idxprom store i32 %0, i32* %arrayidx, align 4 %inc = add i32 %i.02, 1 %cmp = icmp eq i32 %inc, %n br i1 %cmp, label %for.end, label %for.body for.end: ret void } ; CHECK: input ; CHECK: none ; CHECK: output define void @i16_wrap(i64* %a) { entry: br label %for.body for.body: %i = phi i64 [0, %entry], [%i.inc, %for.inc] %i.tr = trunc i64 %i to i16 %idx = getelementptr i64, i64* %a, i16 %i.tr %0 = load i64, i64* %idx %1 = add i64 %0, 1 store i64 %1, i64* %idx br label %for.inc for.inc: %i.inc = add nuw i64 %i, 1 %cmp = icmp ult i64 %i.inc, 17179869184 br i1 %cmp, label %for.body, label %for.end for.end: ret void } ; CHECK: input ; CHECK: anti ; CHECK: output define void @i8_stride_wrap(i32* noalias %a, i32* noalias %b) { entry: br label %for.body for.body: %i = phi i32 [1,%entry], [%i.inc, %for.inc] %i.tr = trunc i32 %i to i8 %idx = getelementptr i32, i32* %a, i8 %i.tr %idx.2 = getelementptr i32, i32* %b, i32 %i %0 = load i32, i32* %idx, align 4 %1 = add i32 %0, 1 store i32 %1, i32* %idx.2, align 4 br label %for.inc for.inc: %i.inc = add nsw i32 %i, 256 %exitcond = icmp ult i32 %i, 65536 br i1 %exitcond, label %for.body, label %for.end for.end: ret void } ; CHECK: input ; CHECK: none ; CHECK: none