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