[llvm] r199508 - Add two new calling conventions for runtime calls
Juergen Ributzka
juergen at apple.com
Fri Jan 17 11:47:03 PST 2014
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
+}
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