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

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X86: Do not use llc -march in tests. `llc -march` is problematic because it only switches the target architecture, but leaves the operating system unchanged. This occasionally leads to indeterministic tests because the OS from LLVM_DEFAULT_TARGET_TRIPLE is used. However we can simply always use `llc -mtriple` instead. This changes all the tests to do this to avoid people using -march when they copy and paste parts of tests. See also the discussion in https://reviews.llvm.org/D35287 llvm-svn: 309774
2017-08-02 08:28:10 +08:00
; RUN: llc < %s -mtriple=x86_64-pc-linux -enable-misched=false | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-pc-linux-gnux32 -enable-misched=false | FileCheck %s -check-prefix=X32ABI
It's not necessary to do rounding for alloca operations when the requested alignment is equal to the stack alignment. llvm-svn: 40004
2007-07-19 00:29:46 +08:00
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. llvm-svn: 104911
2010-05-28 09:14:11 +08:00
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. llvm-svn: 40004
2007-07-19 00:29:46 +08:00
call void @bar(<2 x i64>* %p)
ret void
[x32] Use ebp/esp as frame and stack pointer Summary: Since pointers are 32-bit on x32 we can use ebp and esp as frame and stack pointer. Some operations like PUSH/POP and CFI_INSTRUCTION still require 64-bit register, so using 64-bit MachineFramePtr where required. X86_64 NaCl uses 64-bit frame/stack pointers, however it's been found that both isTarget64BitLP64 and isTarget64BitILP32 are true for NaCl. Addressing this issue here as well by making isTarget64BitLP64 false. Also mark hasReservedSpillSlot unreachable on X86. See inlined comments. Test Plan: Add one new simple test and upgrade 2 existing with x32 target case. Reviewers: nadav, dschuff Subscribers: llvm-commits, zinovy.nis Differential Revision: http://reviews.llvm.org/D4617 llvm-svn: 215091
2014-08-07 17:41:19 +08:00
; CHECK-LABEL: foo
FileCheckize tests. llvm-svn: 159044
2012-06-23 07:04:02 +08:00
; CHECK-NOT: andq $-32, %rax
[x32] Use ebp/esp as frame and stack pointer Summary: Since pointers are 32-bit on x32 we can use ebp and esp as frame and stack pointer. Some operations like PUSH/POP and CFI_INSTRUCTION still require 64-bit register, so using 64-bit MachineFramePtr where required. X86_64 NaCl uses 64-bit frame/stack pointers, however it's been found that both isTarget64BitLP64 and isTarget64BitILP32 are true for NaCl. Addressing this issue here as well by making isTarget64BitLP64 false. Also mark hasReservedSpillSlot unreachable on X86. See inlined comments. Test Plan: Add one new simple test and upgrade 2 existing with x32 target case. Reviewers: nadav, dschuff Subscribers: llvm-commits, zinovy.nis Differential Revision: http://reviews.llvm.org/D4617 llvm-svn: 215091
2014-08-07 17:41:19 +08:00
; X32ABI-LABEL: foo
; X32ABI-NOT: andl $-32, %eax
It's not necessary to do rounding for alloca operations when the requested alignment is equal to the stack alignment. llvm-svn: 40004
2007-07-19 00:29:46 +08:00
}
Update test: dynamic_stackalloc size *must* be rounded to ensure stack ptr be left in a valid state. llvm-svn: 41134
2007-08-17 07:51:28 +08:00
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. llvm-svn: 104911
2010-05-28 09:14:11 +08:00
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. llvm-svn: 41134
2007-08-17 07:51:28 +08:00
call void @bar(<2 x i64>* %p)
ret void
[x32] Use ebp/esp as frame and stack pointer Summary: Since pointers are 32-bit on x32 we can use ebp and esp as frame and stack pointer. Some operations like PUSH/POP and CFI_INSTRUCTION still require 64-bit register, so using 64-bit MachineFramePtr where required. X86_64 NaCl uses 64-bit frame/stack pointers, however it's been found that both isTarget64BitLP64 and isTarget64BitILP32 are true for NaCl. Addressing this issue here as well by making isTarget64BitLP64 false. Also mark hasReservedSpillSlot unreachable on X86. See inlined comments. Test Plan: Add one new simple test and upgrade 2 existing with x32 target case. Reviewers: nadav, dschuff Subscribers: llvm-commits, zinovy.nis Differential Revision: http://reviews.llvm.org/D4617 llvm-svn: 215091
2014-08-07 17:41:19 +08:00
; CHECK-LABEL: 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 llvm-svn: 160002
2012-07-11 01:45:53 +08:00
; CHECK: andq $-32, %rsp
FileCheckize tests. llvm-svn: 159044
2012-06-23 07:04:02 +08:00
; CHECK: andq $-32, %rax
[x32] Use ebp/esp as frame and stack pointer Summary: Since pointers are 32-bit on x32 we can use ebp and esp as frame and stack pointer. Some operations like PUSH/POP and CFI_INSTRUCTION still require 64-bit register, so using 64-bit MachineFramePtr where required. X86_64 NaCl uses 64-bit frame/stack pointers, however it's been found that both isTarget64BitLP64 and isTarget64BitILP32 are true for NaCl. Addressing this issue here as well by making isTarget64BitLP64 false. Also mark hasReservedSpillSlot unreachable on X86. See inlined comments. Test Plan: Add one new simple test and upgrade 2 existing with x32 target case. Reviewers: nadav, dschuff Subscribers: llvm-commits, zinovy.nis Differential Revision: http://reviews.llvm.org/D4617 llvm-svn: 215091
2014-08-07 17:41:19 +08:00
; X32ABI-LABEL: foo2
; X32ABI: andl $-32, %esp
; X32ABI: andl $-32, %eax
}
define void @foo3(i64 %h) {
%p = alloca <2 x i64>, i64 %h
ret void
; CHECK-LABEL: foo3
; CHECK: movq %rbp, %rsp
; X32ABI-LABEL: foo3
; X32ABI: movl %ebp, %esp
Update test: dynamic_stackalloc size *must* be rounded to ensure stack ptr be left in a valid state. llvm-svn: 41134
2007-08-17 07:51:28 +08:00
}