1 ; RUN: opt < %s -slsr -gvn -S | FileCheck %s 2 3 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 4 target triple = "x86_64-unknown-linux-gnu" 5 6 ; Do not perform SLSR on &input[s] and &input[s * 2] which fit into addressing 7 ; modes of X86. 8 define i32 @no_slsr_gep(i32* %input, i64 %s) { 9 ; CHECK-LABEL: @no_slsr_gep( 10 ; v0 = input[0]; 11 %p0 = getelementptr inbounds i32, i32* %input, i64 0 12 %v0 = load i32, i32* %p0 13 14 ; v1 = input[s]; 15 %p1 = getelementptr inbounds i32, i32* %input, i64 %s 16 ; CHECK: %p1 = getelementptr inbounds i32, i32* %input, i64 %s 17 %v1 = load i32, i32* %p1 18 19 ; v2 = input[s * 2]; 20 %s2 = mul nsw i64 %s, 2 21 %p2 = getelementptr inbounds i32, i32* %input, i64 %s2 22 ; CHECK: %p2 = getelementptr inbounds i32, i32* %input, i64 %s2 23 %v2 = load i32, i32* %p2 24 25 ; return v0 + v1 + v2; 26 %1 = add i32 %v0, %v1 27 %2 = add i32 %1, %v2 28 ret i32 %2 29 } 30 31 define void @no_slsr_add(i32 %b, i32 %s) { 32 ; CHECK-LABEL: @no_slsr_add( 33 %1 = add i32 %b, %s 34 ; CHECK: add i32 %b, %s 35 call void @foo(i32 %1) 36 %s2 = mul i32 %s, 2 37 ; CHECK: %s2 = mul i32 %s, 2 38 %2 = add i32 %b, %s2 39 ; CHECK: add i32 %b, %s2 40 call void @foo(i32 %2) 41 ret void 42 } 43 44 declare void @foo(i32 %a) 45
