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llvm/test/CodeGen/ARM/load-global.ll

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Last round of fixes for movw + movt global address codegen. 1. Fixed ARM pc adjustment. 2. Fixed dynamic-no-pic codegen 3. CSE of pc-relative load of global addresses. It's now enabled by default for Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123991 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21 18:55:51 +00:00
; 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
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186831 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-22 15:49:36 +00:00
; PIC_T: ldr r0, LCPI0_0
Last round of fixes for movw + movt global address codegen. 1. Fixed ARM pc adjustment. 2. Fixed dynamic-no-pic codegen 3. CSE of pc-relative load of global addresses. It's now enabled by default for Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123991 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21 18:55:51 +00:00
; 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
Revert "Tests: Be less dependent on a specific schedule/regalloc" This reverts r192454 Apparently FileCheck isn't as smart as I though and does not enforce a topological order between variable defs+uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192472 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-11 18:09:19 +00:00
; LINUX: ldr r0, .LCPI0_0
; LINUX: ldr r1, .LCPI0_1
; LINUX: add r0, pc, r0
; LINUX: ldr r0, [r1, r0]
; LINUX: ldr r0, [r0]
Last round of fixes for movw + movt global address codegen. 1. Fixed ARM pc adjustment. 2. Fixed dynamic-no-pic codegen 3. CSE of pc-relative load of global addresses. It's now enabled by default for Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123991 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21 18:55:51 +00:00
; LINUX: .long G(GOT)
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230794 91177308-0d34-0410-b5e6-96231b3b80d8
2015-02-27 21:17:42 +00:00
%tmp = load i32, i32* @G
Last round of fixes for movw + movt global address codegen. 1. Fixed ARM pc adjustment. 2. Fixed dynamic-no-pic codegen 3. CSE of pc-relative load of global addresses. It's now enabled by default for Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123991 91177308-0d34-0410-b5e6-96231b3b80d8
2011-01-21 18:55:51 +00:00
ret i32 %tmp
}
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