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; RUN: opt < %s -passes=loop-vectorize -S | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
target triple = "x86_64-unknown-linux-gnu"
; This cannot be correctly vectorized with type i1.
define i8 @test_01(i8 %c) #0 {
; CHECK-LABEL: @test_01(
; CHECK-NOT: vector.body:
; CHECK-NOT: zext i1 {{.*}} to i8
entry:
br label %loop
exit: ; preds = %loop
ret i8 %accum.plus
loop: ; preds = %loop, %entry
%accum.phi = phi i8 [ %c, %entry ], [ %accum.plus, %loop ]
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]
%accum.and = and i8 %accum.phi, 1
%accum.plus = add nuw nsw i8 %accum.and, 3
%iv.next = add nuw nsw i32 %iv, 1
%cond = icmp ugt i32 %iv, 191
br i1 %cond, label %exit, label %loop
}
; TODO: This can be vectorized with type i1 because the result is not used.
define void @test_02(i8 %c) #0 {
; CHECK-LABEL: @test_02(
; CHECK-NOT: vector.body:
entry:
br label %loop
exit: ; preds = %loop
%lcssa = phi i8 [ %accum.plus, %loop ]
ret void
loop: ; preds = %loop, %entry
%accum.phi = phi i8 [ %c, %entry ], [ %accum.plus, %loop ]
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]
%accum.and = and i8 %accum.phi, 1
%accum.plus = add nuw nsw i8 %accum.and, 3
%iv.next = add nuw nsw i32 %iv, 1
%cond = icmp ugt i32 %iv, 191
br i1 %cond, label %exit, label %loop
}
; This can be vectorized with type i1 because the result is truncated properly.
define i1 @test_03(i8 %c) #0 {
; CHECK-LABEL: @test_03(
; CHECK: vector.body:
; CHECK: zext i1 {{.*}} to i8
entry:
br label %loop
exit: ; preds = %loop
%lcssa = phi i8 [ %accum.plus, %loop ]
%trunc = trunc i8 %lcssa to i1
ret i1 %trunc
loop: ; preds = %loop, %entry
%accum.phi = phi i8 [ %c, %entry ], [ %accum.plus, %loop ]
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]
%accum.and = and i8 %accum.phi, 1
%accum.plus = add nuw nsw i8 %accum.and, 3
%iv.next = add nuw nsw i32 %iv, 1
%cond = icmp ugt i32 %iv, 191
br i1 %cond, label %exit, label %loop
}
; This cannot be vectorized with type i1 because the result is truncated to a
; wrong type.
; TODO: It can also be vectorized with type i32 (or maybe i4?)
define i4 @test_04(i8 %c) #0 {
; CHECK-LABEL: @test_04(
; CHECK-NOT: vector.body:
; CHECK-NOT: zext i1 {{.*}} to i8
entry:
br label %loop
exit: ; preds = %loop
%lcssa = phi i8 [ %accum.plus, %loop ]
%trunc = trunc i8 %lcssa to i4
ret i4 %trunc
loop: ; preds = %loop, %entry
%accum.phi = phi i8 [ %c, %entry ], [ %accum.plus, %loop ]
%iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]
%accum.and = and i8 %accum.phi, 1
%accum.plus = add nuw nsw i8 %accum.and, 3
%iv.next = add nuw nsw i32 %iv, 1
%cond = icmp ugt i32 %iv, 191
br i1 %cond, label %exit, label %loop
}
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