| ; This test verifies that the loop vectorizer will NOT produce a tail |
| ; loop with the optimize for size or the minimize size attributes. |
| ; REQUIRES: asserts |
| ; RUN: opt < %s -loop-vectorize -S | FileCheck %s |
| |
| target datalayout = "E-m:e-p:32:32-i64:32-f64:32:64-a:0:32-n32-S128" |
| |
| @tab = common global [32 x i8] zeroinitializer, align 1 |
| |
| define i32 @foo_optsize() #0 { |
| ; CHECK-LABEL: @foo_optsize( |
| ; CHECK-NOT: <2 x i8> |
| ; CHECK-NOT: <4 x i8> |
| |
| entry: |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08 |
| %0 = load i8, i8* %arrayidx, align 1 |
| %cmp1 = icmp eq i8 %0, 0 |
| %. = select i1 %cmp1, i8 2, i8 1 |
| store i8 %., i8* %arrayidx, align 1 |
| %inc = add nsw i32 %i.08, 1 |
| %exitcond = icmp eq i32 %i.08, 202 |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body |
| ret i32 0 |
| } |
| |
| attributes #0 = { optsize } |
| |
| define i32 @foo_minsize() #1 { |
| ; CHECK-LABEL: @foo_minsize( |
| ; CHECK-NOT: <2 x i8> |
| ; CHECK-NOT: <4 x i8> |
| |
| entry: |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ] |
| %arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08 |
| %0 = load i8, i8* %arrayidx, align 1 |
| %cmp1 = icmp eq i8 %0, 0 |
| %. = select i1 %cmp1, i8 2, i8 1 |
| store i8 %., i8* %arrayidx, align 1 |
| %inc = add nsw i32 %i.08, 1 |
| %exitcond = icmp eq i32 %i.08, 202 |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body |
| ret i32 0 |
| } |
| |
| attributes #1 = { minsize } |
| |
