| ; RUN: opt < %s -slsr -gvn -S | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Do not perform SLSR on &input[s] and &input[s * 2] which fit into addressing |
| ; modes of X86. |
| define i32 @no_slsr_gep(i32* %input, i64 %s) { |
| ; CHECK-LABEL: @no_slsr_gep( |
| ; v0 = input[0]; |
| %p0 = getelementptr inbounds i32, i32* %input, i64 0 |
| %v0 = load i32, i32* %p0 |
| |
| ; v1 = input[s]; |
| %p1 = getelementptr inbounds i32, i32* %input, i64 %s |
| ; CHECK: %p1 = getelementptr inbounds i32, i32* %input, i64 %s |
| %v1 = load i32, i32* %p1 |
| |
| ; v2 = input[s * 2]; |
| %s2 = mul nsw i64 %s, 2 |
| %p2 = getelementptr inbounds i32, i32* %input, i64 %s2 |
| ; CHECK: %p2 = getelementptr inbounds i32, i32* %input, i64 %s2 |
| %v2 = load i32, i32* %p2 |
| |
| ; return v0 + v1 + v2; |
| %1 = add i32 %v0, %v1 |
| %2 = add i32 %1, %v2 |
| ret i32 %2 |
| } |
| |
| define void @no_slsr_add(i32 %b, i32 %s) { |
| ; CHECK-LABEL: @no_slsr_add( |
| %1 = add i32 %b, %s |
| ; CHECK: add i32 %b, %s |
| call void @foo(i32 %1) |
| %s2 = mul i32 %s, 2 |
| ; CHECK: %s2 = mul i32 %s, 2 |
| %2 = add i32 %b, %s2 |
| ; CHECK: add i32 %b, %s2 |
| call void @foo(i32 %2) |
| ret void |
| } |
| |
| declare void @foo(i32 %a) |