| ; RUN: opt < %s -basicaa -slp-vectorizer -S |FileCheck %s |
| ; RUN: opt < %s -aa-pipeline=basic-aa -passes=slp-vectorizer -S |FileCheck %s |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-unknown" |
| |
| ; Test if SLP can handle GEP expressions. |
| ; The test perform the following action: |
| ; x->first = y->first + 16 |
| ; x->second = y->second + 16 |
| |
| ; CHECK-LABEL: foo1 |
| ; CHECK: <2 x i32*> |
| define void @foo1 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y) { |
| %1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0 |
| %2 = load i32*, i32** %1, align 8 |
| %3 = getelementptr inbounds i32, i32* %2, i64 16 |
| %4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0 |
| store i32* %3, i32** %4, align 8 |
| %5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1 |
| %6 = load i32*, i32** %5, align 8 |
| %7 = getelementptr inbounds i32, i32* %6, i64 16 |
| %8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1 |
| store i32* %7, i32** %8, align 8 |
| ret void |
| } |
| |
| ; Test that we don't vectorize GEP expressions if indexes are not constants. |
| ; We can't produce an efficient code in that case. |
| ; CHECK-LABEL: foo2 |
| ; CHECK-NOT: <2 x i32*> |
| define void @foo2 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y, i32 %i) { |
| %1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0 |
| %2 = load i32*, i32** %1, align 8 |
| %3 = getelementptr inbounds i32, i32* %2, i32 %i |
| %4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0 |
| store i32* %3, i32** %4, align 8 |
| %5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1 |
| %6 = load i32*, i32** %5, align 8 |
| %7 = getelementptr inbounds i32, i32* %6, i32 %i |
| %8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1 |
| store i32* %7, i32** %8, align 8 |
| ret void |
| } |