1; RUN: opt < %s -basicaa -slp-vectorizer -S |FileCheck %s 2target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 3target triple = "x86_64-unknown-unknown" 4 5; Test if SLP can handle GEP expressions. 6; The test perform the following action: 7; x->first = y->first + 16 8; x->second = y->second + 16 9 10; CHECK-LABEL: foo1 11; CHECK: <2 x i32*> 12define void @foo1 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y) { 13 %1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0 14 %2 = load i32*, i32** %1, align 8 15 %3 = getelementptr inbounds i32, i32* %2, i64 16 16 %4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0 17 store i32* %3, i32** %4, align 8 18 %5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1 19 %6 = load i32*, i32** %5, align 8 20 %7 = getelementptr inbounds i32, i32* %6, i64 16 21 %8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1 22 store i32* %7, i32** %8, align 8 23 ret void 24} 25 26; Test that we don't vectorize GEP expressions if indexes are not constants. 27; We can't produce an efficient code in that case. 28; CHECK-LABEL: foo2 29; CHECK-NOT: <2 x i32*> 30define void @foo2 ({ i32*, i32* }* noalias %x, { i32*, i32* }* noalias %y, i32 %i) { 31 %1 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 0 32 %2 = load i32*, i32** %1, align 8 33 %3 = getelementptr inbounds i32, i32* %2, i32 %i 34 %4 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 0 35 store i32* %3, i32** %4, align 8 36 %5 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %y, i64 0, i32 1 37 %6 = load i32*, i32** %5, align 8 38 %7 = getelementptr inbounds i32, i32* %6, i32 %i 39 %8 = getelementptr inbounds { i32*, i32* }, { i32*, i32* }* %x, i64 0, i32 1 40 store i32* %7, i32** %8, align 8 41 ret void 42} 43