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llvm-mirror/test/CodeGen/ARM/load-global.ll
Mihai Popa cb970f1789 This adds range checking for "ldr Rn, [pc, #imm]" Thumb
instructions. With this patch:

1. ldr.n is recognized as mnemonic for the short encoding
2. ldr.w is recognized as menmonic for the long encoding
3. ldr will map to either short or long encodings depending on the size of the offset

llvm-svn: 186831
2013-07-22 15:49:36 +00:00

51 lines
1.5 KiB
LLVM

; RUN: llc < %s -mtriple=armv6-apple-darwin -relocation-model=static | FileCheck %s -check-prefix=STATIC
; RUN: llc < %s -mtriple=armv6-apple-darwin -relocation-model=dynamic-no-pic | FileCheck %s -check-prefix=DYNAMIC
; RUN: llc < %s -mtriple=armv6-apple-darwin -relocation-model=pic | FileCheck %s -check-prefix=PIC
; RUN: llc < %s -mtriple=thumbv6-apple-darwin -relocation-model=pic | FileCheck %s -check-prefix=PIC_T
; RUN: llc < %s -mtriple=armv7-apple-darwin -relocation-model=pic | FileCheck %s -check-prefix=PIC_V7
; RUN: llc < %s -mtriple=armv6-linux-gnueabi -relocation-model=pic | FileCheck %s -check-prefix=LINUX
@G = external global i32
define i32 @test1() {
; STATIC: _test1:
; STATIC: ldr r0, LCPI0_0
; STATIC: ldr r0, [r0]
; STATIC: .long _G
; DYNAMIC: _test1:
; DYNAMIC: ldr r0, LCPI0_0
; DYNAMIC: ldr r0, [r0]
; DYNAMIC: ldr r0, [r0]
; DYNAMIC: .long L_G$non_lazy_ptr
; PIC: _test1
; PIC: ldr r0, LCPI0_0
; PIC: ldr r0, [pc, r0]
; PIC: ldr r0, [r0]
; PIC: .long L_G$non_lazy_ptr-(LPC0_0+8)
; PIC_T: _test1
; PIC_T: ldr r0, LCPI0_0
; PIC_T: add r0, pc
; PIC_T: ldr r0, [r0]
; PIC_T: ldr r0, [r0]
; PIC_T: .long L_G$non_lazy_ptr-(LPC0_0+4)
; PIC_V7: _test1
; PIC_V7: movw r0, :lower16:(L_G$non_lazy_ptr-(LPC0_0+8))
; PIC_V7: movt r0, :upper16:(L_G$non_lazy_ptr-(LPC0_0+8))
; PIC_V7: ldr r0, [pc, r0]
; PIC_V7: ldr r0, [r0]
; LINUX: test1
; LINUX: ldr r0, .LCPI0_0
; LINUX: ldr r1, .LCPI0_1
; LINUX: add r0, pc, r0
; LINUX: ldr r0, [r1, r0]
; LINUX: ldr r0, [r0]
; LINUX: .long G(GOT)
%tmp = load i32* @G
ret i32 %tmp
}