llvm/test/CodeGen/ARM64/fast-isel-addr-offset.ll
Tim Northover 7b837d8c75 ARM64: initial backend import
This adds a second implementation of the AArch64 architecture to LLVM,
accessible in parallel via the "arm64" triple. The plan over the
coming weeks & months is to merge the two into a single backend,
during which time thorough code review should naturally occur.

Everything will be easier with the target in-tree though, hence this
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205090 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-29 10:18:08 +00:00

48 lines
1.5 KiB
LLVM

; RUN: llc < %s -O0 -fast-isel-abort -mtriple=arm64-apple-darwin | FileCheck %s
@sortlist = common global [5001 x i32] zeroinitializer, align 16
@sortlist2 = common global [5001 x i64] zeroinitializer, align 16
; Load an address with an offset larget then LDR imm can handle
define i32 @foo() nounwind {
entry:
; CHECK: @foo
; CHECK: adrp x[[REG:[0-9]+]], _sortlist@GOTPAGE
; CHECK: ldr x[[REG1:[0-9]+]], [x[[REG]], _sortlist@GOTPAGEOFF]
; CHECK: movz x[[REG2:[0-9]+]], #20000
; CHECK: add x[[REG3:[0-9]+]], x[[REG1]], x[[REG2]]
; CHECK: ldr w0, [x[[REG3]]]
; CHECK: ret
%0 = load i32* getelementptr inbounds ([5001 x i32]* @sortlist, i32 0, i64 5000), align 4
ret i32 %0
}
define i64 @foo2() nounwind {
entry:
; CHECK: @foo2
; CHECK: adrp x[[REG:[0-9]+]], _sortlist2@GOTPAGE
; CHECK: ldr x[[REG1:[0-9]+]], [x[[REG]], _sortlist2@GOTPAGEOFF]
; CHECK: movz x[[REG2:[0-9]+]], #40000
; CHECK: add x[[REG3:[0-9]+]], x[[REG1]], x[[REG2]]
; CHECK: ldr x0, [x[[REG3]]]
; CHECK: ret
%0 = load i64* getelementptr inbounds ([5001 x i64]* @sortlist2, i32 0, i64 5000), align 4
ret i64 %0
}
; Load an address with a ridiculously large offset.
; rdar://12505553
@pd2 = common global i8* null, align 8
define signext i8 @foo3() nounwind ssp {
entry:
; CHECK: @foo3
; CHECK: movz x[[REG:[0-9]+]], #2874, lsl #32
; CHECK: movk x[[REG]], #29646, lsl #16
; CHECK: movk x[[REG]], #12274
%0 = load i8** @pd2, align 8
%arrayidx = getelementptr inbounds i8* %0, i64 12345678901234
%1 = load i8* %arrayidx, align 1
ret i8 %1
}