llvm-6502/test/CodeGen/X86/alloca-align-rounding.ll

; RUN: llc < %s -march=x86-64 -mtriple=i686-pc-linux | FileCheck %s

declare void @bar(<2 x i64>* %n)

define void @foo(i64 %h) {
  %p = alloca <2 x i64>, i64 %h
  call void @bar(<2 x i64>* %p)
  ret void
; CHECK: foo
; CHECK-NOT: andq $-32, %rax
}

define void @foo2(i64 %h) {
  %p = alloca <2 x i64>, i64 %h, align 32
  call void @bar(<2 x i64>* %p)
  ret void
; CHECK: foo2
; CHECK: andq $-32, %rsp
; CHECK: andq $-32, %rax
}
FileCheckize tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159044 91177308-0d34-0410-b5e6-96231b3b80d8 2012-06-22 23:04:02 +00:00			`; RUN: llc < %s -march=x86-64 -mtriple=i686-pc-linux \| FileCheck %s`
It's not necessary to do rounding for alloca operations when the requested alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8 2007-07-18 16:29:46 +00:00
			`declare void @bar(<2 x i64>* %n)`

Eliminate the restriction that the array size in an alloca must be i32. This will help reduce the amount of casting required on 64-bit targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104911 91177308-0d34-0410-b5e6-96231b3b80d8 2010-05-28 01:14:11 +00:00			`define void @foo(i64 %h) {`
			`%p = alloca <2 x i64>, i64 %h`
It's not necessary to do rounding for alloca operations when the requested alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8 2007-07-18 16:29:46 +00:00			`call void @bar(<2 x i64>* %p)`
			`ret void`
FileCheckize tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159044 91177308-0d34-0410-b5e6-96231b3b80d8 2012-06-22 23:04:02 +00:00			`; CHECK: foo`
			`; CHECK-NOT: andq $-32, %rax`
It's not necessary to do rounding for alloca operations when the requested alignment is equal to the stack alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8 2007-07-18 16:29:46 +00:00			`}`
Update test: dynamic_stackalloc size must be rounded to ensure stack ptr be left in a valid state. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41134 91177308-0d34-0410-b5e6-96231b3b80d8 2007-08-16 23:51:28 +00:00
Eliminate the restriction that the array size in an alloca must be i32. This will help reduce the amount of casting required on 64-bit targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104911 91177308-0d34-0410-b5e6-96231b3b80d8 2010-05-28 01:14:11 +00:00			`define void @foo2(i64 %h) {`
			`%p = alloca <2 x i64>, i64 %h, align 32`
Update test: dynamic_stackalloc size must be rounded to ensure stack ptr be left in a valid state. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41134 91177308-0d34-0410-b5e6-96231b3b80d8 2007-08-16 23:51:28 +00:00			`call void @bar(<2 x i64>* %p)`
			`ret void`
FileCheckize tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159044 91177308-0d34-0410-b5e6-96231b3b80d8 2012-06-22 23:04:02 +00:00			`; CHECK: foo2`
Add support for dynamic stack realignment in the presence of dynamic allocas on X86. Basically, this is a reapplication of r158087 with a few fixes. Specifically, (1) the stack pointer is restored from the base pointer before popping callee-saved registers and (2) in obscure cases (see comments in patch) we must cache the value of the original stack adjustment in the prologue and apply it in the epilogue. rdar://11496434 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160002 91177308-0d34-0410-b5e6-96231b3b80d8 2012-07-10 17:45:53 +00:00			`; CHECK: andq $-32, %rsp`
FileCheckize tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159044 91177308-0d34-0410-b5e6-96231b3b80d8 2012-06-22 23:04:02 +00:00			`; CHECK: andq $-32, %rax`
Update test: dynamic_stackalloc size must be rounded to ensure stack ptr be left in a valid state. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41134 91177308-0d34-0410-b5e6-96231b3b80d8 2007-08-16 23:51:28 +00:00			`}`