hanchenye-llvm-project/llvm/test/CodeGen/X86/negative-offset.ll

19 lines
555 B
LLVM

; RUN: llc < %s -asm-verbose=false | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
; Test that a constant consisting of a global symbol with a negative offset
; is properly folded and isel'd.
; CHECK-LABEL: negative_offset:
; CHECK: movl $G, %eax
; CHECK: notq %rax
; CHECK: addq %rdi, %rax
; CHECK: retq
@G = external global [8 x i32]
define i8* @negative_offset(i8* %a) {
%t = getelementptr i8, i8* %a, i64 sub (i64 -1, i64 ptrtoint ([8 x i32]* @G to i64))
ret i8* %t
}