| ; RUN: llc -asm-verbose=false -march=x86-64 -mtriple=x86_64-apple-darwin -o - < %s | FileCheck %s |
| |
| ; LSR should leave non-affine expressions alone because it currently |
| ; doesn't know how to do anything with them, and when it tries, it |
| ; gets SCEVExpander's current expansion for them, which is suboptimal. |
| |
| ; CHECK: xorl %eax, %eax |
| ; CHECK-NEXT: align |
| ; CHECK-NEXT: BB0_1: |
| ; CHECK-NEXT: movq %rax, (%rdx) |
| ; CHECK-NEXT: addq %rsi, %rax |
| ; CHECK-NEXT: cmpq %rdi, %rax |
| ; CHECK-NEXT: jl |
| ; CHECK-NEXT: imulq %rax, %rax |
| ; CHECK-NEXT: ret |
| define i64 @foo(i64 %n, i64 %s, i64* %p) nounwind { |
| entry: |
| br label %loop |
| |
| loop: |
| %i = phi i64 [ 0, %entry ], [ %i.next, %loop ] |
| store volatile i64 %i, i64* %p |
| %i.next = add i64 %i, %s |
| %c = icmp slt i64 %i.next, %n |
| br i1 %c, label %loop, label %exit |
| |
| exit: |
| %mul = mul i64 %i.next, %i.next |
| ret i64 %mul |
| } |
