Displaying 20 results from an estimated 1338 matches for "rbp".
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2018 Apr 26
2
windows ABI problem with i128?
...s the breakpoint.
Meanwhile on linux, this test passes.
I suspect it may be a calling convention issue. Here is the assembly for
the linux x86_64 version:
=================================================================
0000000000000010 <_start>:
10: 55 push %rbp
11: 48 89 e5 mov %rsp,%rbp
14: 48 83 ec 40 sub $0x40,%rsp
18: 48 b8 14 30 27 ec 01 movabs $0x1ec273014,%rax
1f: 00 00 00
22: 48 89 45 f8 mov %rax,-0x8(%rbp)
26: 48 b8 ff ff ff ff ff movabs $0xff7377ffffffffff,%...
2017 Mar 15
2
[LLD] Linking static library does not resolve symbols as gold/ld
...by lld crashes, while the gold version runs fine.
>
> The difference is in the call instructions below. The original object file
> from the archive has an address of zero in the call instruction:
>
> 0000000000013832 <func>:
> 13832: 55 push %rbp
> 13833: 48 89 e5 mov %rsp,%rbp
> 13836: 53 push %rbx
> 13837: 48 83 ec 18 sub $0x18,%rsp
> 1383b: 48 89 7d e8 mov %rdi,-0x18(%rbp)
> 1383f: 48 8b 45 e8 mov...
2012 Mar 02
3
[LLVMdev] how to annotate assembler
Hi,
In GCC there is one useful option -dp (or -dP for more verbose output)
to annotate assembler with instruction patterns, that was used when
assembler was generated. For example:
double
test(long long s)
{
return s;
}
gcc -S -dp -O0 test.c
test:
.LFB0:
.cfi_startproc
pushq %rbp # 18 *pushdi2_rex64/1 [length = 1]
.cfi_def_cfa_offset 16
movq %rsp, %rbp # 19 *movdi_1_rex64/2 [length = 3]
.cfi_offset 6, -16
.cfi_def_cfa_register 6
movq %rdi, -8(%rbp) # 2 *movdi_1_rex64/4 [length = 4]
cvtsi2sdq -8(%rbp), %xmm0 # 6 *floatdidf2_sse_interunit/2 [length = 6]...
2018 Apr 26
0
windows ABI problem with i128?
..., this test passes.
>
> I suspect it may be a calling convention issue. Here is the assembly for the
> linux x86_64 version:
>
>
> =================================================================
> 0000000000000010 <_start>:
> 10: 55 push %rbp
> 11: 48 89 e5 mov %rsp,%rbp
> 14: 48 83 ec 40 sub $0x40,%rsp
> 18: 48 b8 14 30 27 ec 01 movabs $0x1ec273014,%rax
> 1f: 00 00 00
> 22: 48 89 45 f8 mov %rax,-0x8(%rbp)
> 26: 48 b8 ff ff ff ff ff...
2018 Apr 12
3
[RFC] __builtin_constant_p() Improvements
...i_startproc
# %bb.0: # %entry
testl %edi, %edi
movl $927, %ecx # imm = 0x39F
movl $1, %eax
cmovel %ecx, %eax
retq
And this code at -O0:
bar: # @bar
.cfi_startproc
# %bb.0: # %entry
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
movl %edi, -16(%rbp)
cmpl $0, -16(%rbp)
je .LBB0_2
# %bb.1: # %if.then
movl $42, -8(%rbp)
movl $0, -4(%rbp)
movl -4(%rbp), %eax
movl %eax, -12(%rbp)
jmp .LBB0_3
.LBB0_2:...
2018 Apr 26
1
windows ABI problem with i128?
...pect it may be a calling convention issue. Here is the assembly for
> the
> > linux x86_64 version:
> >
> >
> > =================================================================
> > 0000000000000010 <_start>:
> > 10: 55 push %rbp
> > 11: 48 89 e5 mov %rsp,%rbp
> > 14: 48 83 ec 40 sub $0x40,%rsp
> > 18: 48 b8 14 30 27 ec 01 movabs $0x1ec273014,%rax
> > 1f: 00 00 00
> > 22: 48 89 45 f8 mov %rax,-0x8(%rbp)
> >...
2017 Mar 15
2
[LLD] Linking static library does not resolve symbols as gold/ld
On Wed, Mar 15, 2017 at 2:22 PM, Martin Richtarsky <s at martinien.de> wrote:
> Here is the relevant output:
>
> 0000000000013832 <func()>:
> 13832: 55 push %rbp
> 13833: 48 89 e5 mov %rsp,%rbp
> 13836: 53 push %rbx
> 13837: 48 83 ec 18 sub $0x18,%rsp
> 1383b: 48 89 7d e8 mov %rdi,-0x18(%rbp)
> 1383f: 48 8b 45 e8 mov...
2012 Mar 01
3
[LLVMdev] Stack alignment on X86 AVX seems incorrect
...quot;llvmdev at cs.uiuc.edu" <llvmdev at cs.uiuc.edu>
Message-ID:
<A0DC88CEB3010344830D52D66533DA8E0C2E7A at HASMSX103.ger.corp.intel.com>
Content-Type: text/plain; charset="windows-1252"
./llc -mattr=+avx -stack-alignment=16 < basic.ll | grep movaps | grep ymm |
grep rbp
vmovaps -176(%rbp), %ymm14
vmovaps -144(%rbp), %ymm11
vmovaps -240(%rbp), %ymm13
vmovaps -208(%rbp), %ymm9
vmovaps -272(%rbp), %ymm7
vmovaps -304(%rbp), %ymm0
vmovaps -112(%rbp), %ymm0
vmovaps -80(%rbp), %ymm1
vmovaps -112(%rbp), %ymm0...
2012 Jun 30
2
[LLVMdev] gcc bug?..segfault problem with getElfArchType.
...quot;
FWIW I'm compiling on x86_64/gcc-4.7.1.
This is the assembly, (widen your email window!)
Broken: Call side
ObjectFile *ObjectFile::createELFObjectFile(MemoryBuffer *Object) {
0x00000000004cc864
<_ZN4llvm6object10ObjectFile19createELFObjectFileEPNS_12MemoryBufferE>:
push %rbp
0x00000000004cc865
<_ZN4llvm6object10ObjectFile19createELFObjectFileEPNS_12MemoryBufferE+1>:
mov %rsp,%rbp
0x00000000004cc868
<_ZN4llvm6object10ObjectFile19createELFObjectFileEPNS_12MemoryBufferE+4>:
push %rbx
0x00000000004cc869
<_ZN4llvm6object10ObjectFile19createELFObje...
2012 Mar 02
0
[LLVMdev] how to annotate assembler
...ssembler was generated. For example:
The internal "-mllvm -show-mc-inst" option is probably as close as you can get.
$ clang -S -O0 test.c -mllvm -show-mc-inst -o -
_test: ## @test
.cfi_startproc
## BB#0: ## %entry
pushq %rbp ## <MCInst #2120 PUSH64r
## <MCOperand Reg:106>>
Ltmp2:
.cfi_def_cfa_offset 16
Ltmp3:
.cfi_offset %rbp, -16
movq %rsp, %rbp ## <MCInst #1491 MOV64rr
## <MCOperand R...
2019 Feb 05
2
clang emits calls to consexpr function.
...low testcase
$cat test.cpp
constexpr int product()
{
return 10*20;
}
int main()
{
const int x = product();
return 0;
}
$./clang test.cpp -std=c++11 -S
$./clang -v
clang version 9.0.0
Target: x86_64-unknown-linux-gnu
$cat test.s
main:
.cfi_startproc
# %bb.0:
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset %rbp, -16
movq %rsp, %rbp
.cfi_def_cfa_register %rbp
subq $16, %rsp
movl $0, -4(%rbp)
callq _Z7productv //here you can see the calls to product
function
xorl %ecx, %ecx
movl...
2017 Mar 23
2
[LLD] Linking static library does not resolve symbols as gold/ld
...artin Richtarsky <s at martinien.de> wrote:
> Hi Rui,
>
> fyi I'm still working on a reproducer I can share.
>
> >> Here is the relevant output:
> >>
> >> 0000000000013832 <func()>:
> >> 13832: 55 push %rbp
> >> 13833: 48 89 e5 mov %rsp,%rbp
> >> 13836: 53 push %rbx
> >> 13837: 48 83 ec 18 sub $0x18,%rsp
> >> 1383b: 48 89 7d e8 mov %rdi,-0x18(%rbp)
> >>...
2016 May 29
4
[cfe-dev] How to debug if LTO generate wrong code?
...mble the codemodel1_large_lto.bin, you will see it uses the small code model (32-bit RIP-relative), not large, to do addressing as below.
>
> $ objdump -dS codemodel1_large_lto.bin
>
> int main(int argc, const char* argv[])
> {
> 4004f0: 55 push %rbp
> 4004f1: 48 89 e5 mov %rsp,%rbp
> 4004f4: 48 83 ec 20 sub $0x20,%rsp
> 4004f8: c7 45 fc 00 00 00 00 movl $0x0,-0x4(%rbp)
> 4004ff: 89 7d f8 mov %edi,-0x8(%rbp)
> 400502: 48 89 75 f0...
2013 Aug 08
0
[LLVMdev] Address space extension
...= load i32* %1, align 4, !tbaa !0
ret i32 %2
}
Note that in loadgs2, the call to toglobal has been inlined and so the back end will just see a bitcast, which SelectionDAG treats as a no-op. The assembly we get from this is:
_toglobal: ## @toglobal
## BB#0:
pushq %rbp
movq %rsp, %rbp
movq %rdi, %rax
popq %rbp
ret
load: ## @load
## BB#0:
pushq %rbp
movq %rsp, %rbp
movl (%rdi), %eax
popq %rbp
ret
.globl _loadgs
.align 4, 0x90
loadgs: ## @loadgs
## BB#0:
pushq %rbp
movq %rsp, %rbp
movl %...
2014 Sep 11
2
[LLVMdev] Fail to load a pointer to a function inside MCJIT-ed code when it is reload from ObjectCache
...as following and it runs OK. 0x7fe4801fa1f8 at instruction
0x00007fe4cc6c2014 points to 0x69382E which is the beginning of ExecEvalVar
function. Then I save the object code into a file after implementing
notifyObjectCompiled method.
IrExprGetValue:
0x00007fe4cc6c2000: push %rbp
0x00007fe4cc6c2001: mov %rsp,%rbp
0x00007fe4cc6c2004: mov 0x10(%rdi),%rax
0x00007fe4cc6c2008: pop %rbp
0x00007fe4cc6c2009: jmpq *%rax
0x00007fe4cc6c200b: nopl 0x0(%rax,%rax,1)
JittedOpExpr:
0x00007fe4cc6c2010: push %rbp
0x00007fe4cc6c2011: mov %rsp,%rbp
*0x00007fe4...
2014 Dec 08
2
[LLVMdev] Virtual register problem in X86 backend
...6::MOV64rr)).addReg(regA).addReg(X86::RSP);
// Check condition
BuildMI(*MBB_cond, MBB_cond->end(), db, TII->get(X86::PHI),
regB).addReg(regA).addMBB(MBB).addReg(regC).addMBB(MBB_erase);
BuildMI(*MBB_cond, MBB_cond->end(), db,
TII->get(X86::CMP64rr)).addReg(regB).addReg(X86::RBP);
BuildMI(*MBB_cond, MBB_cond->end(), db,
TII->get(X86::JE_4)).addMBB(MBB_end);
// mov dword[reg], 0x0
BuildMI(*MBB_erase, MBB_erase->end(), db,
TII->get(X86::MOV32mi)).addReg(regB).addImm(1).addReg(0).addImm(0).addReg(0).addImm(0);
BuildMI(*MBB_erase, MBB_erase->end(...
2016 May 30
0
[cfe-dev] How to debug if LTO generate wrong code?
..., the code need to run in high address (larger than 2 GB) is a reasonable requirement.
$ gcc -g -O0 -flto codemodel1.c -mcmodel=large -o codemodel1_large_lto_gcc.bin
$ objdump -dS codemodel1_large_lto_gcc.bin
int main(int argc, const char* argv[])
{
40048b: 55 push %rbp
40048c: 48 89 e5 mov %rsp,%rbp
40048f: 48 83 ec 20 sub $0x20,%rsp
400493: 89 7d ec mov %edi,-0x14(%rbp)
400496: 48 89 75 e0 mov %rsi,-0x20(%rbp)
int t = global_func(argc);
40049a: 8b 45 ec...
2018 Apr 13
0
[RFC] __builtin_constant_p() Improvements
...ry
> testl %edi, %edi
> movl $927, %ecx # imm = 0x39F
> movl $1, %eax
> cmovel %ecx, %eax
> retq
>
> And this code at -O0:
>
> bar: # @bar
> .cfi_startproc
> # %bb.0: # %entry
> pushq %rbp
> .cfi_def_cfa_offset 16
> .cfi_offset %rbp, -16
> movq %rsp, %rbp
> .cfi_def_cfa_register %rbp
> movl %edi, -16(%rbp)
> cmpl $0, -16(%rbp)
> je .LBB0_2
> # %bb.1: # %if.then
> movl $42, -8(%rbp)
> movl $0, -4(%rbp)
> movl -4(%rbp), %e...
2016 May 30
2
[cfe-dev] How to debug if LTO generate wrong code?
...g? Are you building your own clang?
--
Mehdi
>
> $ gcc -g -O0 -flto codemodel1.c -mcmodel=large -o codemodel1_large_lto_gcc.bin
> $ objdump -dS codemodel1_large_lto_gcc.bin
>
> int main(int argc, const char* argv[])
> {
> 40048b: 55 push %rbp
> 40048c: 48 89 e5 mov %rsp,%rbp
> 40048f: 48 83 ec 20 sub $0x20,%rsp
> 400493: 89 7d ec mov %edi,-0x14(%rbp)
> 400496: 48 89 75 e0 mov %rsi,-0x20(%rbp)
> int t = global_func(argc);...
2012 Mar 01
0
[LLVMdev] Stack alignment on X86 AVX seems incorrect
...03.ger.corp.intel.com
>> <mailto:A0DC88CEB3010344830D52D66533DA8E0C2E7A at HASMSX103.ger.corp.intel.com>>
>> Content-Type: text/plain; charset="windows-1252"
>>
>> ./llc -mattr=+avx -stack-alignment=16 < basic.ll | grep movaps | grep
>> ymm | grep rbp
>> vmovaps -176(%rbp), %ymm14
>> vmovaps -144(%rbp), %ymm11
>> vmovaps -240(%rbp), %ymm13
>> vmovaps -208(%rbp), %ymm9
>> vmovaps -272(%rbp), %ymm7
>> vmovaps -304(%rbp), %ymm0
>> vmovaps -112(%rbp), %ymm0
&g...