| ; This test verifies that the loop vectorizer will NOT produce a tail |
| ; loop with Optimize for size attibute. |
| ; REQUIRES: asserts |
| ; RUN: opt < %s -loop-vectorize -Os -debug -debug-only=loop-vectorize -S 2>&1 | FileCheck %s |
| |
| ;CHECK-NOT: <2 x i8> |
| ;CHECK-NOT: <4 x i8> |
| ;CHECK: Aborting. A tail loop is required in Os. |
| |
| 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 |
| |
| ; Function Attrs: nounwind optsize |
| define i32 @foo() #0 { |
| 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 = { nounwind optsize "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
