103 lines
3.0 KiB
LLVM
103 lines
3.0 KiB
LLVM
|
; RUN: opt < %s -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
|
||
|
|
}
|