mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
d2bf432b2b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145171 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
874 B
LLVM
31 lines
874 B
LLVM
; 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
|
|
}
|