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; RUN: opt -mtriple=x86_64-unknown-linux-gnu -passes=load-store-vectorizer -S -o - %s | FileCheck %s
; RUN: opt -mtriple=x86_64-unknown-linux-gnu -aa-pipeline=basic-aa -passes='function(load-store-vectorizer)' -S -o - %s | FileCheck %s
target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
%struct.buffer_t = type { i64, ptr }
%struct.nested.buffer = type { %struct.buffer_t, %struct.buffer_t }
; Check an i64 and ptr get vectorized, and that the two accesses
; (load into buff.val and store to buff.p) preserve their order.
; Vectorized loads should be inserted at the position of the first load,
; and instructions which were between the first and last load should be
; reordered preserving their relative order inasmuch as possible.
; CHECK-LABEL: @preserve_order_64(
; CHECK: load <2 x i64>
; CHECK: %buff.val = load i8
; CHECK: store i8 0
define void @preserve_order_64(ptr noalias %buff) #0 {
entry:
%tmp1 = getelementptr inbounds %struct.buffer_t, ptr %buff, i64 0, i32 1
%buff.p = load ptr, ptr %tmp1
%buff.val = load i8, ptr %buff.p
store i8 0, ptr %buff.p, align 8
%buff.int = load i64, ptr %buff, align 16
ret void
}
; Check reordering recurses correctly.
; CHECK-LABEL: @transitive_reorder(
; CHECK: load <2 x i64>
; CHECK: %buff.val = load i8
; CHECK: store i8 0
define void @transitive_reorder(ptr noalias %buff, ptr noalias %nest) #0 {
entry:
%tmp1 = getelementptr inbounds %struct.buffer_t, ptr %nest, i64 0, i32 1
%buff.p = load ptr, ptr %tmp1
%buff.val = load i8, ptr %buff.p
store i8 0, ptr %buff.p, align 8
%buff.int = load i64, ptr %nest, align 16
ret void
}
; Check for no vectorization over phi node
; CHECK-LABEL: @no_vect_phi(
; CHECK: load ptr
; CHECK: load i8
; CHECK: store i8 0
; CHECK: load i64
define void @no_vect_phi(ptr noalias %ptr, ptr noalias %buff) {
entry:
%tmp1 = getelementptr inbounds %struct.buffer_t, ptr %buff, i64 0, i32 1
%buff.p = load ptr, ptr %tmp1
%buff.val = load i8, ptr %buff.p
store i8 0, ptr %buff.p, align 8
br label %"for something"
"for something":
%index = phi i64 [ 0, %entry ], [ %index.next, %"for something" ]
%buff.int = load i64, ptr %buff, align 16
%index.next = add i64 %index, 8
%cmp_res = icmp eq i64 %index.next, 8
br i1 %cmp_res, label %ending, label %"for something"
ending:
ret void
}
attributes #0 = { nounwind }
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