[llvm] r199508 - Add two new calling conventions for runtime calls
Hal Finkel
hfinkel at anl.gov
Fri Jan 17 14:20:49 PST 2014
Andy,
Out of curiosity, is it worth not considering such calls to be scheduling barriers?
-Hal
----- Original Message -----
> From: "Juergen Ributzka" <juergen at apple.com>
> To: "Richard Osborne" <richard at xmos.com>
> Cc: "LLVM Commits" <llvm-commits at cs.uiuc.edu>
> Sent: Friday, January 17, 2014 4:03:03 PM
> Subject: Re: [llvm] r199508 - Add two new calling conventions for runtime calls
>
> Hi Richard,
>
> right now the cold calling convention is very very similar to the
> PreserveMost calling convention. The only differences are that
> PreserveMost doesn’t preserve R11 for X86-64 and the inlining
> heuristic never inlines cold calls. I think these are the only
> semantic differences. Besides the semantic differences the name
> “coldcc” represents the exact opposite of what the preserve_*cc are
> used for. I will extend LangRef a little more to show the
> difference.
>
> Cheers,
> Juergen
>
> On Jan 17, 2014, at 1:48 PM, Richard Osborne <richard at xmos.com>
> wrote:
>
> > As target-independent calling conventions how do they compare to
> > the cold calling convention? It’s clear from the language ref
> > description that preserve_all preserves more registers than the
> > preserve_most but I’m not sure where coldcc fits in. Would it be
> > possible to clarify this?
> >
> > On 17 Jan 2014, at 19:47, Juergen Ributzka <juergen at apple.com>
> > wrote:
> >
> >> Author: ributzka
> >> Date: Fri Jan 17 13:47:03 2014
> >> New Revision: 199508
> >>
> >> URL: http://llvm.org/viewvc/llvm-project?rev=199508&view=rev
> >> Log:
> >> Add two new calling conventions for runtime calls
> >>
> >> This patch adds two new target-independent calling conventions for
> >> runtime
> >> calls - PreserveMost and PreserveAll.
> >> The target-specific implementation for X86-64 is defined as
> >> following:
> >> - Arguments are passed as for the default C calling convention
> >> - The same applies for the return value(s)
> >> - PreserveMost preserves all GPRs - except R11
> >> - PreserveAll preserves all GPRs and all XMMs/YMMs - except R11
> >>
> >> Reviewed by Lang and Philip
> >>
> >> Added:
> >> llvm/trunk/test/CodeGen/X86/preserve_allcc64.ll
> >> llvm/trunk/test/CodeGen/X86/preserve_mostcc64.ll
> >> Modified:
> >> llvm/trunk/docs/BitCodeFormat.rst
> >> llvm/trunk/docs/LangRef.rst
> >> llvm/trunk/include/llvm/IR/CallingConv.h
> >> llvm/trunk/lib/AsmParser/LLLexer.cpp
> >> llvm/trunk/lib/AsmParser/LLParser.cpp
> >> llvm/trunk/lib/AsmParser/LLToken.h
> >> llvm/trunk/lib/IR/AsmWriter.cpp
> >> llvm/trunk/lib/Target/X86/X86CallingConv.td
> >> llvm/trunk/lib/Target/X86/X86RegisterInfo.cpp
> >>
> >> Modified: llvm/trunk/docs/BitCodeFormat.rst
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/BitCodeFormat.rst?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/docs/BitCodeFormat.rst (original)
> >> +++ llvm/trunk/docs/BitCodeFormat.rst Fri Jan 17 13:47:03 2014
> >> @@ -739,6 +739,8 @@ function. The operand fields are:
> >> * ``coldcc``: code 9
> >> * ``webkit_jscc``: code 12
> >> * ``anyregcc``: code 13
> >> + * ``preserve_mostcc``: code 14
> >> + * ``preserve_allcc``: code 15
> >> * ``x86_stdcallcc``: code 64
> >> * ``x86_fastcallcc``: code 65
> >> * ``arm_apcscc``: code 66
> >>
> >> Modified: llvm/trunk/docs/LangRef.rst
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/LangRef.rst?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/docs/LangRef.rst (original)
> >> +++ llvm/trunk/docs/LangRef.rst Fri Jan 17 13:47:03 2014
> >> @@ -359,6 +359,49 @@ added in the future:
> >> allocated. This can currently only be used with calls to
> >> llvm.experimental.patchpoint because only this intrinsic
> >> records
> >> the location of its arguments in a side table. See
> >> :doc:`StackMaps`.
> >> +"``preserve_mostcc``" - The `PreserveMost` calling convention
> >> + This calling convention attempts to make the code in the
> >> caller as little
> >> + intrusive as possible. This calling convention behaves
> >> identical to the `C`
> >> + calling convention on how arguments and return values are
> >> passed, but it
> >> + uses a different set of caller/callee-saved registers. This
> >> alleviates the
> >> + burden of saving and recovering a large register set before
> >> and after the
> >> + call in the caller.
> >> +
> >> + - On X86-64 the callee preserves all general purpose
> >> registers, except for
> >> + R11. R11 can be used as a scratch register. Floating-point
> >> registers
> >> + (XMMs/YMMs) are not preserved and need to be saved by the
> >> caller.
> >> +
> >> + The idea behind this convention is to support calls to
> >> runtime functions
> >> + that have a hot path and a cold path. The hot path is usually
> >> a small piece
> >> + of code that doesn't many registers. The cold path might need
> >> to call out to
> >> + another function and therefore only needs to preserve the
> >> caller-saved
> >> + registers, which haven't already been saved by the caller.
> >> +
> >> + This calling convention will be used by a future version of
> >> the ObjectiveC
> >> + runtime and should therefore still be considered experimental
> >> at this time.
> >> + Although this convention was created to optimize certain
> >> runtime calls to
> >> + the ObjectiveC runtime, it is not limited to this runtime and
> >> might be used
> >> + by other runtimes in the future too. The current
> >> implementation only
> >> + supports X86-64, but the intention is to support more
> >> architectures in the
> >> + future.
> >> +"``preserve_allcc``" - The `PreserveAll` calling convention
> >> + This calling convention attempts to make the code in the
> >> caller even less
> >> + intrusive than the `PreserveMost` calling convention. This
> >> calling
> >> + convention also behaves identical to the `C` calling
> >> convention on how
> >> + arguments and return values are passed, but it uses a
> >> different set of
> >> + caller/callee-saved registers. This removes the burden of
> >> saving and
> >> + recovering a large register set before and after the call in
> >> the caller.
> >> +
> >> + - On X86-64 the callee preserves all general purpose
> >> registers, except for
> >> + R11. R11 can be used as a scratch register. Furthermore it
> >> also preserves
> >> + all floating-point registers (XMMs/YMMs).
> >> +
> >> + The idea behind this convention is to support calls to
> >> runtime functions
> >> + that don't need to call out to any other functions.
> >> +
> >> + This calling convention, like the `PreserveMost` calling
> >> convention, will be
> >> + used by a future version of the ObjectiveC runtime and should
> >> be considered
> >> + experimental at this time.
> >> "``cc <n>``" - Numbered convention
> >> Any calling convention may be specified by number, allowing
> >> target-specific calling conventions to be used. Target specific
> >>
> >> Modified: llvm/trunk/include/llvm/IR/CallingConv.h
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/CallingConv.h?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/include/llvm/IR/CallingConv.h (original)
> >> +++ llvm/trunk/include/llvm/IR/CallingConv.h Fri Jan 17 13:47:03
> >> 2014
> >> @@ -58,6 +58,14 @@ namespace CallingConv {
> >> // stackmap and patchpoint intrinsics).
> >> AnyReg = 13,
> >>
> >> + // PreserveMost - Calling convention for runtime calls that
> >> preserves most
> >> + // registers.
> >> + PreserveMost = 14,
> >> +
> >> + // PreserveAll - Calling convention for runtime calls that
> >> preserves
> >> + // (almost) all registers.
> >> + PreserveAll = 15,
> >> +
> >> // Target - This is the start of the target-specific calling
> >> conventions,
> >> // e.g. fastcall and thiscall on X86.
> >> FirstTargetCC = 64,
> >>
> >> Modified: llvm/trunk/lib/AsmParser/LLLexer.cpp
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/AsmParser/LLLexer.cpp?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/lib/AsmParser/LLLexer.cpp (original)
> >> +++ llvm/trunk/lib/AsmParser/LLLexer.cpp Fri Jan 17 13:47:03 2014
> >> @@ -563,6 +563,8 @@ lltok::Kind LLLexer::LexIdentifier() {
> >> KEYWORD(x86_64_win64cc);
> >> KEYWORD(webkit_jscc);
> >> KEYWORD(anyregcc);
> >> + KEYWORD(preserve_mostcc);
> >> + KEYWORD(preserve_allcc);
> >>
> >> KEYWORD(cc);
> >> KEYWORD(c);
> >>
> >> Modified: llvm/trunk/lib/AsmParser/LLParser.cpp
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/AsmParser/LLParser.cpp?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/lib/AsmParser/LLParser.cpp (original)
> >> +++ llvm/trunk/lib/AsmParser/LLParser.cpp Fri Jan 17 13:47:03 2014
> >> @@ -1369,6 +1369,8 @@ bool LLParser::ParseOptionalDLLStorageCl
> >> /// ::= 'x86_64_win64cc'
> >> /// ::= 'webkit_jscc'
> >> /// ::= 'anyregcc'
> >> +/// ::= 'preserve_mostcc'
> >> +/// ::= 'preserve_allcc'
> >> /// ::= 'cc' UINT
> >> ///
> >> bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
> >> @@ -1393,6 +1395,8 @@ bool LLParser::ParseOptionalCallingConv(
> >> case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64;
> >> break;
> >> case lltok::kw_webkit_jscc: CC = CallingConv::WebKit_JS;
> >> break;
> >> case lltok::kw_anyregcc: CC = CallingConv::AnyReg; break;
> >> + case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost;
> >> break;
> >> + case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll;
> >> break;
> >> case lltok::kw_cc: {
> >> unsigned ArbitraryCC;
> >> Lex.Lex();
> >>
> >> Modified: llvm/trunk/lib/AsmParser/LLToken.h
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/AsmParser/LLToken.h?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/lib/AsmParser/LLToken.h (original)
> >> +++ llvm/trunk/lib/AsmParser/LLToken.h Fri Jan 17 13:47:03 2014
> >> @@ -92,6 +92,7 @@ namespace lltok {
> >> kw_spir_kernel, kw_spir_func,
> >> kw_x86_64_sysvcc, kw_x86_64_win64cc,
> >> kw_webkit_jscc, kw_anyregcc,
> >> + kw_preserve_mostcc, kw_preserve_allcc,
> >>
> >> // Attributes:
> >> kw_attributes,
> >>
> >> Modified: llvm/trunk/lib/IR/AsmWriter.cpp
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/AsmWriter.cpp?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/lib/IR/AsmWriter.cpp (original)
> >> +++ llvm/trunk/lib/IR/AsmWriter.cpp Fri Jan 17 13:47:03 2014
> >> @@ -73,6 +73,8 @@ static void PrintCallingConv(unsigned cc
> >> case CallingConv::Cold: Out << "coldcc"; break;
> >> case CallingConv::WebKit_JS: Out << "webkit_jscc"; break;
> >> case CallingConv::AnyReg: Out << "anyregcc"; break;
> >> + case CallingConv::PreserveMost: Out << "preserve_mostcc";
> >> break;
> >> + case CallingConv::PreserveAll: Out << "preserve_allcc";
> >> break;
> >> case CallingConv::X86_StdCall: Out << "x86_stdcallcc"; break;
> >> case CallingConv::X86_FastCall: Out << "x86_fastcallcc"; break;
> >> case CallingConv::X86_ThisCall: Out << "x86_thiscallcc"; break;
> >>
> >> Modified: llvm/trunk/lib/Target/X86/X86CallingConv.td
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86CallingConv.td?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/lib/Target/X86/X86CallingConv.td (original)
> >> +++ llvm/trunk/lib/Target/X86/X86CallingConv.td Fri Jan 17
> >> 13:47:03 2014
> >> @@ -620,6 +620,16 @@ def CSR_64EHRet : CalleeSavedRegs<(add R
> >> def CSR_Win64 : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, R12, R13,
> >> R14, R15,
> >> (sequence "XMM%u", 6, 15))>;
> >>
> >> +// All GPRs - except r11
> >> +def CSR_64_RT_MostRegs : CalleeSavedRegs<(add CSR_64, RAX, RCX,
> >> RDX, RSI, RDI,
> >> + R8, R9, R10, RSP)>;
> >> +
> >> +// All registers - except r11
> >> +def CSR_64_RT_AllRegs : CalleeSavedRegs<(add
> >> CSR_64_RT_MostRegs,
> >> + (sequence
> >> "XMM%u", 0, 15))>;
> >> +def CSR_64_RT_AllRegs_AVX : CalleeSavedRegs<(add
> >> CSR_64_RT_MostRegs,
> >> + (sequence
> >> "YMM%u", 0, 15))>;
> >> +
> >> def CSR_64_MostRegs : CalleeSavedRegs<(add RBX, RCX, RDX, RSI,
> >> RDI, R8, R9, R10,
> >> R11, R12, R13, R14, R15,
> >> RBP,
> >> (sequence "XMM%u", 0,
> >> 15))>;
> >>
> >> Modified: llvm/trunk/lib/Target/X86/X86RegisterInfo.cpp
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86RegisterInfo.cpp?rev=199508&r1=199507&r2=199508&view=diff
> >> ==============================================================================
> >> --- llvm/trunk/lib/Target/X86/X86RegisterInfo.cpp (original)
> >> +++ llvm/trunk/lib/Target/X86/X86RegisterInfo.cpp Fri Jan 17
> >> 13:47:03 2014
> >> @@ -245,6 +245,12 @@ X86RegisterInfo::getCalleeSavedRegs(cons
> >> if (HasAVX)
> >> return CSR_64_AllRegs_AVX_SaveList;
> >> return CSR_64_AllRegs_SaveList;
> >> + case CallingConv::PreserveMost:
> >> + return CSR_64_RT_MostRegs_SaveList;
> >> + case CallingConv::PreserveAll:
> >> + if (HasAVX)
> >> + return CSR_64_RT_AllRegs_AVX_SaveList;
> >> + return CSR_64_RT_AllRegs_SaveList;
> >> case CallingConv::Intel_OCL_BI: {
> >> if (HasAVX512 && IsWin64)
> >> return CSR_Win64_Intel_OCL_BI_AVX512_SaveList;
> >> @@ -292,6 +298,12 @@ X86RegisterInfo::getCallPreservedMask(Ca
> >> if (HasAVX)
> >> return CSR_64_AllRegs_AVX_RegMask;
> >> return CSR_64_AllRegs_RegMask;
> >> + case CallingConv::PreserveMost:
> >> + return CSR_64_RT_MostRegs_RegMask;
> >> + case CallingConv::PreserveAll:
> >> + if (HasAVX)
> >> + return CSR_64_RT_AllRegs_AVX_RegMask;
> >> + return CSR_64_RT_AllRegs_RegMask;
> >> case CallingConv::Intel_OCL_BI: {
> >> if (IsWin64 && HasAVX512)
> >> return CSR_Win64_Intel_OCL_BI_AVX512_RegMask;
> >>
> >> Added: llvm/trunk/test/CodeGen/X86/preserve_allcc64.ll
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/preserve_allcc64.ll?rev=199508&view=auto
> >> ==============================================================================
> >> --- llvm/trunk/test/CodeGen/X86/preserve_allcc64.ll (added)
> >> +++ llvm/trunk/test/CodeGen/X86/preserve_allcc64.ll Fri Jan 17
> >> 13:47:03 2014
> >> @@ -0,0 +1,104 @@
> >> +; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 |
> >> FileCheck --check-prefix=SSE %s
> >> +; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx |
> >> FileCheck --check-prefix=AVX %s
> >> +
> >> +define preserve_allcc void @preserve_allcc1() nounwind {
> >> +entry:
> >> +;SSE-LABEL: preserve_allcc1
> >> +;SSE: pushq %r10
> >> +;SSE-NEXT: pushq %r9
> >> +;SSE-NEXT: pushq %r8
> >> +;SSE-NEXT: pushq %rdi
> >> +;SSE-NEXT: pushq %rsi
> >> +;SSE-NEXT: pushq %rdx
> >> +;SSE-NEXT: pushq %rcx
> >> +;SSE-NEXT: pushq %rax
> >> +;SSE-NEXT: pushq %rbp
> >> +;SSE-NEXT: pushq %r15
> >> +;SSE-NEXT: pushq %r14
> >> +;SSE-NEXT: pushq %r13
> >> +;SSE-NEXT: pushq %r12
> >> +;SSE-NEXT: pushq %rbx
> >> +;SSE: movaps %xmm15
> >> +;SSE-NEXT: movaps %xmm14
> >> +;SSE-NEXT: movaps %xmm13
> >> +;SSE-NEXT: movaps %xmm12
> >> +;SSE-NEXT: movaps %xmm11
> >> +;SSE-NEXT: movaps %xmm10
> >> +;SSE-NEXT: movaps %xmm9
> >> +;SSE-NEXT: movaps %xmm8
> >> +;SSE-NEXT: movaps %xmm7
> >> +;SSE-NEXT: movaps %xmm6
> >> +;SSE-NEXT: movaps %xmm5
> >> +;SSE-NEXT: movaps %xmm4
> >> +;SSE-NEXT: movaps %xmm3
> >> +;SSE-NEXT: movaps %xmm2
> >> +;SSE-NEXT: movaps %xmm1
> >> +;SSE-NEXT: movaps %xmm0
> >> +;AVX-LABEL: preserve_allcc1
> >> +;AVX: pushq %r10
> >> +;AVX-NEXT: pushq %r9
> >> +;AVX-NEXT: pushq %r8
> >> +;AVX-NEXT: pushq %rdi
> >> +;AVX-NEXT: pushq %rsi
> >> +;AVX-NEXT: pushq %rdx
> >> +;AVX-NEXT: pushq %rcx
> >> +;AVX-NEXT: pushq %rax
> >> +;AVX-NEXT: pushq %rbp
> >> +;AVX-NEXT: pushq %r15
> >> +;AVX-NEXT: pushq %r14
> >> +;AVX-NEXT: pushq %r13
> >> +;AVX-NEXT: pushq %r12
> >> +;AVX-NEXT: pushq %rbx
> >> +;AVX: vmovups %ymm15
> >> +;AVX-NEXT: vmovups %ymm14
> >> +;AVX-NEXT: vmovups %ymm13
> >> +;AVX-NEXT: vmovups %ymm12
> >> +;AVX-NEXT: vmovups %ymm11
> >> +;AVX-NEXT: vmovups %ymm10
> >> +;AVX-NEXT: vmovups %ymm9
> >> +;AVX-NEXT: vmovups %ymm8
> >> +;AVX-NEXT: vmovups %ymm7
> >> +;AVX-NEXT: vmovups %ymm6
> >> +;AVX-NEXT: vmovups %ymm5
> >> +;AVX-NEXT: vmovups %ymm4
> >> +;AVX-NEXT: vmovups %ymm3
> >> +;AVX-NEXT: vmovups %ymm2
> >> +;AVX-NEXT: vmovups %ymm1
> >> +;AVX-NEXT: vmovups %ymm0
> >> + call void asm sideeffect "",
> >> "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{rbp},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15}"()
> >> + ret void
> >> +}
> >> +
> >> +; Make sure only R11 is saved before the call
> >> +declare preserve_allcc void @bar(i64, i64, double, double)
> >> +define void @preserve_allcc2() nounwind {
> >> +entry:
> >> +;SSE-LABEL: preserve_allcc2
> >> +;SSE: movq %r11, [[REG:%[a-z0-9]+]]
> >> +;SSE-NOT: movaps %xmm
> >> +;SSE: movq [[REG]], %r11
> >> + %a0 = call i64 asm sideeffect "", "={rax}"() nounwind
> >> + %a1 = call i64 asm sideeffect "", "={rcx}"() nounwind
> >> + %a2 = call i64 asm sideeffect "", "={rdx}"() nounwind
> >> + %a3 = call i64 asm sideeffect "", "={r8}"() nounwind
> >> + %a4 = call i64 asm sideeffect "", "={r9}"() nounwind
> >> + %a5 = call i64 asm sideeffect "", "={r10}"() nounwind
> >> + %a6 = call i64 asm sideeffect "", "={r11}"() nounwind
> >> + %a10 = call <2 x double> asm sideeffect "", "={xmm2}"()
> >> nounwind
> >> + %a11 = call <2 x double> asm sideeffect "", "={xmm3}"()
> >> nounwind
> >> + %a12 = call <2 x double> asm sideeffect "", "={xmm4}"()
> >> nounwind
> >> + %a13 = call <2 x double> asm sideeffect "", "={xmm5}"()
> >> nounwind
> >> + %a14 = call <2 x double> asm sideeffect "", "={xmm6}"()
> >> nounwind
> >> + %a15 = call <2 x double> asm sideeffect "", "={xmm7}"()
> >> nounwind
> >> + %a16 = call <2 x double> asm sideeffect "", "={xmm8}"()
> >> nounwind
> >> + %a17 = call <2 x double> asm sideeffect "", "={xmm9}"()
> >> nounwind
> >> + %a18 = call <2 x double> asm sideeffect "", "={xmm10}"()
> >> nounwind
> >> + %a19 = call <2 x double> asm sideeffect "", "={xmm11}"()
> >> nounwind
> >> + %a20 = call <2 x double> asm sideeffect "", "={xmm12}"()
> >> nounwind
> >> + %a21 = call <2 x double> asm sideeffect "", "={xmm13}"()
> >> nounwind
> >> + %a22 = call <2 x double> asm sideeffect "", "={xmm14}"()
> >> nounwind
> >> + %a23 = call <2 x double> asm sideeffect "", "={xmm15}"()
> >> nounwind
> >> + call preserve_allcc void @bar(i64 1, i64 2, double 3.0, double
> >> 4.0)
> >> + call void asm sideeffect "",
> >> "{rax},{rcx},{rdx},{r8},{r9},{r10},{r11},{xmm2},{xmm3},{xmm4},{xmm5},{xmm6},{xmm7},{xmm8},{xmm9},{xmm10},{xmm11},{xmm12},{xmm13},{xmm14},{xmm15}"(i64
> >> %a0, i64 %a1, i64 %a2, i64 %a3, i64 %a4, i64 %a5, i64 %a6, <2 x
> >> double> %a10, <2 x double> %a11, <2 x double> %a12, <2 x double>
> >> %a13, <2 x double> %a14, <2 x double> %a15, <2 x double> %a16, <2
> >> x double> %a17, <2 x double> %a18, <2 x double> %a19, <2 x
> >> double> %a20, <2 x double> %a21, <2 x double> %a22, <2 x double>
> >> %a23)
> >> + ret void
> >> +}
> >>
> >> Added: llvm/trunk/test/CodeGen/X86/preserve_mostcc64.ll
> >> URL:
> >> http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/preserve_mostcc64.ll?rev=199508&view=auto
> >> ==============================================================================
> >> --- llvm/trunk/test/CodeGen/X86/preserve_mostcc64.ll (added)
> >> +++ llvm/trunk/test/CodeGen/X86/preserve_mostcc64.ll Fri Jan 17
> >> 13:47:03 2014
> >> @@ -0,0 +1,86 @@
> >> +; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 |
> >> FileCheck --check-prefix=SSE %s
> >> +; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7-avx |
> >> FileCheck --check-prefix=AVX %s
> >> +
> >> +; Every GPR should be saved - except r11
> >> +define preserve_mostcc void @preserve_mostcc1() nounwind {
> >> +entry:
> >> +;SSE-LABEL: preserve_mostcc1
> >> +;SSE: pushq %r10
> >> +;SSE-NEXT: pushq %r9
> >> +;SSE-NEXT: pushq %r8
> >> +;SSE-NEXT: pushq %rdi
> >> +;SSE-NEXT: pushq %rsi
> >> +;SSE-NEXT: pushq %rdx
> >> +;SSE-NEXT: pushq %rcx
> >> +;SSE-NEXT: pushq %rax
> >> +;SSE-NEXT: pushq %rbp
> >> +;SSE-NEXT: pushq %r15
> >> +;SSE-NEXT: pushq %r14
> >> +;SSE-NEXT: pushq %r13
> >> +;SSE-NEXT: pushq %r12
> >> +;SSE-NEXT: pushq %rbx
> >> +;AVX-LABEL: preserve_mostcc1
> >> +;AVX: pushq %r10
> >> +;AVX-NEXT: pushq %r9
> >> +;AVX-NEXT: pushq %r8
> >> +;AVX-NEXT: pushq %rdi
> >> +;AVX-NEXT: pushq %rsi
> >> +;AVX-NEXT: pushq %rdx
> >> +;AVX-NEXT: pushq %rcx
> >> +;AVX-NEXT: pushq %rax
> >> +;AVX-NEXT: pushq %rbp
> >> +;AVX-NEXT: pushq %r15
> >> +;AVX-NEXT: pushq %r14
> >> +;AVX-NEXT: pushq %r13
> >> +;AVX-NEXT: pushq %r12
> >> +;AVX-NEXT: pushq %rbx
> >> + call void asm sideeffect "",
> >> "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{rbp},~{xmm0},~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15}"()
> >> + ret void
> >> +}
> >> +
> >> +; Make sure R11 and XMMs are saved before the call
> >> +declare preserve_mostcc void @foo(i64, i64, double, double)
> >> +define void @preserve_mostcc2() nounwind {
> >> +entry:
> >> +;SSE-LABEL: preserve_mostcc2
> >> +;SSE: movq %r11, [[REG:%[a-z0-9]+]]
> >> +;SSE: movaps %xmm2
> >> +;SSE: movaps %xmm3
> >> +;SSE: movaps %xmm4
> >> +;SSE: movaps %xmm5
> >> +;SSE: movaps %xmm6
> >> +;SSE: movaps %xmm7
> >> +;SSE: movaps %xmm8
> >> +;SSE: movaps %xmm9
> >> +;SSE: movaps %xmm10
> >> +;SSE: movaps %xmm11
> >> +;SSE: movaps %xmm12
> >> +;SSE: movaps %xmm13
> >> +;SSE: movaps %xmm14
> >> +;SSE: movaps %xmm15
> >> +;SSE: movq [[REG]], %r11
> >> + %a0 = call i64 asm sideeffect "", "={rax}"() nounwind
> >> + %a1 = call i64 asm sideeffect "", "={rcx}"() nounwind
> >> + %a2 = call i64 asm sideeffect "", "={rdx}"() nounwind
> >> + %a3 = call i64 asm sideeffect "", "={r8}"() nounwind
> >> + %a4 = call i64 asm sideeffect "", "={r9}"() nounwind
> >> + %a5 = call i64 asm sideeffect "", "={r10}"() nounwind
> >> + %a6 = call i64 asm sideeffect "", "={r11}"() nounwind
> >> + %a10 = call <2 x double> asm sideeffect "", "={xmm2}"()
> >> nounwind
> >> + %a11 = call <2 x double> asm sideeffect "", "={xmm3}"()
> >> nounwind
> >> + %a12 = call <2 x double> asm sideeffect "", "={xmm4}"()
> >> nounwind
> >> + %a13 = call <2 x double> asm sideeffect "", "={xmm5}"()
> >> nounwind
> >> + %a14 = call <2 x double> asm sideeffect "", "={xmm6}"()
> >> nounwind
> >> + %a15 = call <2 x double> asm sideeffect "", "={xmm7}"()
> >> nounwind
> >> + %a16 = call <2 x double> asm sideeffect "", "={xmm8}"()
> >> nounwind
> >> + %a17 = call <2 x double> asm sideeffect "", "={xmm9}"()
> >> nounwind
> >> + %a18 = call <2 x double> asm sideeffect "", "={xmm10}"()
> >> nounwind
> >> + %a19 = call <2 x double> asm sideeffect "", "={xmm11}"()
> >> nounwind
> >> + %a20 = call <2 x double> asm sideeffect "", "={xmm12}"()
> >> nounwind
> >> + %a21 = call <2 x double> asm sideeffect "", "={xmm13}"()
> >> nounwind
> >> + %a22 = call <2 x double> asm sideeffect "", "={xmm14}"()
> >> nounwind
> >> + %a23 = call <2 x double> asm sideeffect "", "={xmm15}"()
> >> nounwind
> >> + call preserve_mostcc void @foo(i64 1, i64 2, double 3.0, double
> >> 4.0)
> >> + call void asm sideeffect "",
> >> "{rax},{rcx},{rdx},{r8},{r9},{r10},{r11},{xmm2},{xmm3},{xmm4},{xmm5},{xmm6},{xmm7},{xmm8},{xmm9},{xmm10},{xmm11},{xmm12},{xmm13},{xmm14},{xmm15}"(i64
> >> %a0, i64 %a1, i64 %a2, i64 %a3, i64 %a4, i64 %a5, i64 %a6, <2 x
> >> double> %a10, <2 x double> %a11, <2 x double> %a12, <2 x double>
> >> %a13, <2 x double> %a14, <2 x double> %a15, <2 x double> %a16, <2
> >> x double> %a17, <2 x double> %a18, <2 x double> %a19, <2 x
> >> double> %a20, <2 x double> %a21, <2 x double> %a22, <2 x double>
> >> %a23)
> >> + ret void
> >> +}
> >>
> >>
> >> _______________________________________________
> >> llvm-commits mailing list
> >> llvm-commits at cs.uiuc.edu
> >> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
> >
>
>
> _______________________________________________
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> llvm-commits at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>
--
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory
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