| ; RUN: opt -S -basic-aa -gvn < %s | FileCheck %s |
| ; RUN: opt -S -basic-aa -gvn -basic-aa-force-at-least-64b=0 < %s | FileCheck %s |
| |
| target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128" |
| target triple = "i386-apple-macosx10.6.0" |
| |
| ; The load and store address in the loop body could alias so the load |
| ; can't be hoisted above the store and out of the loop. |
| |
| declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i1) |
| |
| define i32 @foo(i32 %x, i32 %z, i32 %n) { |
| entry: |
| %pool = alloca [59 x i32], align 4 |
| %tmp = bitcast [59 x i32]* %pool to i8* |
| call void @llvm.memset.p0i8.i32(i8* align 4 nonnull %tmp, i8 0, i32 236, i1 false) |
| %cmp3 = icmp eq i32 %n, 0 |
| br i1 %cmp3, label %for.end, label %for.body.lr.ph |
| |
| for.body.lr.ph: ; preds = %entry |
| %add = add i32 %z, %x |
| %and = and i32 %add, 2147483647 |
| %sub = add nsw i32 %and, -2137521902 |
| %arrayidx = getelementptr inbounds [59 x i32], [59 x i32]* %pool, i32 0, i32 %sub |
| %arrayidx1 = getelementptr inbounds [59 x i32], [59 x i32]* %pool, i32 0, i32 42 |
| br label %for.body |
| |
| for.body: ; preds = %for.body.lr.ph, %for.body |
| %i.04 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ] |
| store i32 %i.04, i32* %arrayidx, align 4 |
| %tmp1 = load i32, i32* %arrayidx1, align 4 |
| %inc = add nuw i32 %i.04, 1 |
| %exitcond = icmp ne i32 %inc, %n |
| br i1 %exitcond, label %for.body, label %for.end.loopexit |
| |
| for.end.loopexit: ; preds = %for.body |
| %lcssa = phi i32 [ %tmp1, %for.body ] |
| br label %for.end |
| |
| for.end: ; preds = %for.end.loopexit, %entry |
| %s = phi i32 [ 0, %entry ], [ %lcssa, %for.end.loopexit ] |
| ; CHECK: ret i32 %s |
| ret i32 %s |
| } |