[llvm] r199508 - Add two new calling conventions for runtime calls
Richard Osborne
richard at xmos.com
Fri Jan 17 13:48:37 PST 2014
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
More information about the llvm-commits
mailing list