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llvm-6502/test/CodeGen/Thumb/large-stack.ll

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Fix more places which should be checking for iOS, not darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147513 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-04 01:55:04 +00:00
; RUN: llc < %s -mtriple=thumb-apple-ios | FileCheck %s
Move thumb and thumb2 tests into separate directories. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24 06:36:07 +00:00
define void @test1() {
Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object. Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 19:30:19 +00:00
; CHECK: test1:
; CHECK: sub sp, #256
; CHECK: add sp, #256
Move thumb and thumb2 tests into separate directories. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24 06:36:07 +00:00
%tmp = alloca [ 64 x i32 ] , align 4
ret void
}
define void @test2() {
Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object. Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 19:30:19 +00:00
; CHECK: test2:
Thumb1 had two patterns for the same load-from-constant-pool instruction. Canonicalize on tLDRpci and remove tLDRcp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121920 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15 23:52:36 +00:00
; CHECK: ldr.n r0, LCPI
Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object. Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 19:30:19 +00:00
; CHECK: add sp, r0
Fix epilogue codegen to avoid leaving the stack pointer in an invalid state. Previously Thumb2 would restore sp from fp like this: mov sp, r7 sub, sp, #4 If an interrupt is taken after the 'mov' but before the 'sub', callee-saved registers might be clobbered by the interrupt handler. Instead, try restoring directly from sp: add sp, #4 Or, if necessary (with VLA, etc.) use a scratch register to compute sp and then restore it: sub.w r4, r7, #8 mov sp, r7 rdar://8465407 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119977 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-22 18:12:04 +00:00
; CHECK: subs r4, r7, #4
; CHECK: mov sp, r4
Move thumb and thumb2 tests into separate directories. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24 06:36:07 +00:00
%tmp = alloca [ 4168 x i8 ] , align 4
ret void
}
define i32 @test3() {
Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object. Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 19:30:19 +00:00
; CHECK: test3:
LocalStackSlotAllocation improvements First, taking advantage of the fact that the virtual base registers are allocated in order of the local frame offsets, remove the quadratic register-searching behavior. Because of the ordering, we only need to check the last virtual base register created. Second, store the frame index in the FrameRef structure, and get the frame index and the local offset from this structure at the top of the loop iteration. This allows us to de-nest the loops in insertFrameReferenceRegisters (and I think makes the code cleaner). I also moved the needsFrameBaseReg check into the first loop over instructions so that we don't bother pushing FrameRefs for instructions that don't want a virtual base register anyway. Lastly, and this is the only functionality change, avoid the creation of single-use virtual base registers. These are currently not useful because, in general, they end up replacing what would be one r+r instruction with an add and a r+i instruction. Committing this removes the XFAIL in CodeGen/PowerPC/2007-09-07-LoadStoreIdxForms.ll Jim has okayed this off-list. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180799 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-30 20:04:37 +00:00
; CHECK: ldr.n r1, LCPI
; CHECK: add sp, r1
Thumb1 had two patterns for the same load-from-constant-pool instruction. Canonicalize on tLDRpci and remove tLDRcp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121920 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-15 23:52:36 +00:00
; CHECK: ldr.n r1, LCPI
Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object. Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 19:30:19 +00:00
; CHECK: add r1, sp
Fix epilogue codegen to avoid leaving the stack pointer in an invalid state. Previously Thumb2 would restore sp from fp like this: mov sp, r7 sub, sp, #4 If an interrupt is taken after the 'mov' but before the 'sub', callee-saved registers might be clobbered by the interrupt handler. Instead, try restoring directly from sp: add sp, #4 Or, if necessary (with VLA, etc.) use a scratch register to compute sp and then restore it: sub.w r4, r7, #8 mov sp, r7 rdar://8465407 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119977 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-22 18:12:04 +00:00
; CHECK: subs r4, r7, #4
; CHECK: mov sp, r4
Re-apply r110655 with fixes. Epilogue must restore sp from fp if the function stack frame has a var-sized object. Also added a test case to check for the added benefit of this patch: it's optimizing away the unnecessary restore of sp from fp for some non-leaf functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-08-10 19:30:19 +00:00
%retval = alloca i32, align 4
%tmp = alloca i32, align 4
%a = alloca [805306369 x i8], align 16
store i32 0, i32* %tmp
%tmp1 = load i32* %tmp
ret i32 %tmp1
Move thumb and thumb2 tests into separate directories. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74068 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-24 06:36:07 +00:00
}
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