| ; RUN: opt -mtriple=x86_64 -codegenprepare -S < %s | FileCheck %s |
| ; CHECK: for.body.preheader |
| |
| @N = common global i32 0, align 4 |
| @E = common global ptr null, align 8 |
| @B = common global ptr null, align 8 |
| |
| ; Function Attrs: nounwind |
| define i32 @foo() { |
| entry: |
| %0 = load i32, ptr @N, align 4 |
| %1 = load ptr, ptr @E, align 8 |
| %2 = load ptr, ptr @B, align 8 |
| %cmp7 = icmp eq ptr %2, %1 |
| br i1 %cmp7, label %for.cond.cleanup, label %for.body.preheader |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| %add.lcssa = phi i32 [ %add, %for.body ] |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| %n.0.lcssa = phi i32 [ %0, %entry ], [ %add.lcssa, %for.cond.cleanup.loopexit ] |
| ret i32 %n.0.lcssa |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| %I.09 = phi ptr [ %incdec.ptr, %for.body ], [ %2, %for.body.preheader ] |
| %n.08 = phi i32 [ %add, %for.body ], [ %0, %for.body.preheader ] |
| %3 = load ptr, ptr %I.09, align 8 |
| %call = tail call i32 @map(ptr %3) |
| %add = add nsw i32 %call, %n.08 |
| %incdec.ptr = getelementptr inbounds ptr, ptr %I.09, i64 1 |
| %cmp = icmp eq ptr %incdec.ptr, %1 |
| br i1 %cmp, label %for.cond.cleanup.loopexit, label %for.body |
| } |
| |
| declare i32 @map(ptr) |
