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src/hotspot/cpu/x86/x86_64.ad
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rev 53791 : [mq]: JDK-8217909.patch
@@ -167,12 +167,101 @@
//
// Empty register class.
reg_class no_reg();
+// Class for all pointer/long registers
+reg_class all_reg(RAX, RAX_H,
+ RDX, RDX_H,
+ RBP, RBP_H,
+ RDI, RDI_H,
+ RSI, RSI_H,
+ RCX, RCX_H,
+ RBX, RBX_H,
+ RSP, RSP_H,
+ R8, R8_H,
+ R9, R9_H,
+ R10, R10_H,
+ R11, R11_H,
+ R12, R12_H,
+ R13, R13_H,
+ R14, R14_H,
+ R15, R15_H);
+
+// Class for all int registers
+reg_class all_int_reg(RAX
+ RDX,
+ RBP,
+ RDI,
+ RSI,
+ RCX,
+ RBX,
+ R8,
+ R9,
+ R10,
+ R11,
+ R12,
+ R13,
+ R14);
+
+// Class for all pointer registers
+reg_class any_reg %{
+ return _ANY_REG_mask;
+%}
+
+// Class for all pointer registers (excluding RSP)
+reg_class ptr_reg %{
+ return _PTR_REG_mask;
+%}
+
+// Class for all pointer registers (excluding RSP and RBP)
+reg_class ptr_reg_no_rbp %{
+ return _PTR_REG_NO_RBP_mask;
+%}
+
+// Class for all pointer registers (excluding RAX and RSP)
+reg_class ptr_no_rax_reg %{
+ return _PTR_NO_RAX_REG_mask;
+%}
+
+// Class for all pointer registers (excluding RAX, RBX, and RSP)
+reg_class ptr_no_rax_rbx_reg %{
+ return _PTR_NO_RAX_RBX_REG_mask;
+%}
+
+// Class for all long registers (excluding RSP)
+reg_class long_reg %{
+ return _LONG_REG_mask;
+%}
+
+// Class for all long registers (excluding RAX, RDX and RSP)
+reg_class long_no_rax_rdx_reg %{
+ return _LONG_NO_RAX_RDX_REG_mask;
+%}
+
+// Class for all long registers (excluding RCX and RSP)
+reg_class long_no_rcx_reg %{
+ return _LONG_NO_RCX_REG_mask;
+%}
+
+// Class for all int registers (excluding RSP)
+reg_class int_reg %{
+ return _INT_REG_mask;
+%}
+
+// Class for all int registers (excluding RAX, RDX, and RSP)
+reg_class int_no_rax_rdx_reg %{
+ return _INT_NO_RAX_RDX_REG_mask;
+%}
+
+// Class for all int registers (excluding RCX and RSP)
+reg_class int_no_rcx_reg %{
+ return _INT_NO_RCX_REG_mask;
+%}
+
// Class for all pointer registers (including RSP and RBP)
-reg_class any_reg_with_rbp(RAX, RAX_H,
+reg_class any_reg0_with_rbp(RAX, RAX_H,
RDX, RDX_H,
RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
@@ -186,11 +275,11 @@
R13, R13_H,
R14, R14_H,
R15, R15_H);
// Class for all pointer registers (including RSP, but excluding RBP)
-reg_class any_reg_no_rbp(RAX, RAX_H,
+reg_class any_reg0_no_rbp(RAX, RAX_H,
RDX, RDX_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
@@ -205,14 +294,14 @@
R15, R15_H);
// Dynamic register class that selects at runtime between register classes
// any_reg_no_rbp and any_reg_with_rbp (depending on the value of the flag PreserveFramePointer).
// Equivalent to: return PreserveFramePointer ? any_reg_no_rbp : any_reg_with_rbp;
-reg_class_dynamic any_reg(any_reg_no_rbp, any_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic any_reg0(any_reg0_no_rbp, any_reg0_with_rbp, %{ PreserveFramePointer %});
-// Class for all pointer registers (excluding RSP)
-reg_class ptr_reg_with_rbp(RAX, RAX_H,
+// Class for all pointer registers
+reg_class ptr_reg0_with_rbp(RAX, RAX_H,
RDX, RDX_H,
RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
@@ -222,12 +311,11 @@
R10, R10_H,
R11, R11_H,
R13, R13_H,
R14, R14_H);
-// Class for all pointer registers (excluding RSP and RBP)
-reg_class ptr_reg_no_rbp(RAX, RAX_H,
+reg_class ptr_reg0_no_rbp(RAX, RAX_H,
RDX, RDX_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
@@ -237,14 +325,14 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Dynamic register class that selects between ptr_reg_no_rbp and ptr_reg_with_rbp.
-reg_class_dynamic ptr_reg(ptr_reg_no_rbp, ptr_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic ptr_reg0(ptr_reg0_no_rbp, ptr_reg0_with_rbp, %{ PreserveFramePointer %});
// Class for all pointer registers (excluding RAX and RSP)
-reg_class ptr_no_rax_reg_with_rbp(RDX, RDX_H,
+reg_class ptr_no_rax_reg0_with_rbp(RDX, RDX_H,
RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
@@ -254,11 +342,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Class for all pointer registers (excluding RAX, RSP, and RBP)
-reg_class ptr_no_rax_reg_no_rbp(RDX, RDX_H,
+reg_class ptr_no_rax_reg0_no_rbp(RDX, RDX_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
R8, R8_H,
@@ -267,14 +355,14 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Dynamic register class that selects between ptr_no_rax_reg_no_rbp and ptr_no_rax_reg_with_rbp.
-reg_class_dynamic ptr_no_rax_reg(ptr_no_rax_reg_no_rbp, ptr_no_rax_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic ptr_no_rax_reg0(ptr_no_rax_reg0_no_rbp, ptr_no_rax_reg0_with_rbp, %{ PreserveFramePointer %});
// Class for all pointer registers (excluding RAX, RBX, and RSP)
-reg_class ptr_no_rax_rbx_reg_with_rbp(RDX, RDX_H,
+reg_class ptr_no_rax_rbx_reg0_with_rbp(RDX, RDX_H,
RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
R8, R8_H,
@@ -283,11 +371,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Class for all pointer registers (excluding RAX, RBX, RSP, and RBP)
-reg_class ptr_no_rax_rbx_reg_no_rbp(RDX, RDX_H,
+reg_class ptr_no_rax_rbx_reg0_no_rbp(RDX, RDX_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
R8, R8_H,
R9, R9_H,
@@ -295,11 +383,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Dynamic register class that selects between ptr_no_rax_rbx_reg_no_rbp and ptr_no_rax_rbx_reg_with_rbp.
-reg_class_dynamic ptr_no_rax_rbx_reg(ptr_no_rax_rbx_reg_no_rbp, ptr_no_rax_rbx_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic ptr_no_rax_rbx_reg0(ptr_no_rax_rbx_reg0_no_rbp, ptr_no_rax_rbx_reg0_with_rbp, %{ PreserveFramePointer %});
// Singleton class for RAX pointer register
reg_class ptr_rax_reg(RAX, RAX_H);
// Singleton class for RBX pointer register
@@ -316,11 +404,11 @@
// Singleton class for TLS pointer
reg_class ptr_r15_reg(R15, R15_H);
// Class for all long registers (excluding RSP)
-reg_class long_reg_with_rbp(RAX, RAX_H,
+reg_class long_reg0_with_rbp(RAX, RAX_H,
RDX, RDX_H,
RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
@@ -331,11 +419,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Class for all long registers (excluding RSP and RBP)
-reg_class long_reg_no_rbp(RAX, RAX_H,
+reg_class long_reg0_no_rbp(RAX, RAX_H,
RDX, RDX_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
@@ -345,14 +433,14 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Dynamic register class that selects between long_reg_no_rbp and long_reg_with_rbp.
-reg_class_dynamic long_reg(long_reg_no_rbp, long_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic long_reg0(long_reg0_no_rbp, long_reg0_with_rbp, %{ PreserveFramePointer %});
// Class for all long registers (excluding RAX, RDX and RSP)
-reg_class long_no_rax_rdx_reg_with_rbp(RBP, RBP_H,
+reg_class long_no_rax_rdx_reg0_with_rbp(RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
R8, R8_H,
@@ -361,11 +449,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Class for all long registers (excluding RAX, RDX, RSP, and RBP)
-reg_class long_no_rax_rdx_reg_no_rbp(RDI, RDI_H,
+reg_class long_no_rax_rdx_reg0_no_rbp(RDI, RDI_H,
RSI, RSI_H,
RCX, RCX_H,
RBX, RBX_H,
R8, R8_H,
R9, R9_H,
@@ -373,14 +461,14 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Dynamic register class that selects between long_no_rax_rdx_reg_no_rbp and long_no_rax_rdx_reg_with_rbp.
-reg_class_dynamic long_no_rax_rdx_reg(long_no_rax_rdx_reg_no_rbp, long_no_rax_rdx_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic long_no_rax_rdx_reg0(long_no_rax_rdx_reg0_no_rbp, long_no_rax_rdx_reg0_with_rbp, %{ PreserveFramePointer %});
// Class for all long registers (excluding RCX and RSP)
-reg_class long_no_rcx_reg_with_rbp(RBP, RBP_H,
+reg_class long_no_rcx_reg0_with_rbp(RBP, RBP_H,
RDI, RDI_H,
RSI, RSI_H,
RAX, RAX_H,
RDX, RDX_H,
RBX, RBX_H,
@@ -390,11 +478,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Class for all long registers (excluding RCX, RSP, and RBP)
-reg_class long_no_rcx_reg_no_rbp(RDI, RDI_H,
+reg_class long_no_rcx_reg0_no_rbp(RDI, RDI_H,
RSI, RSI_H,
RAX, RAX_H,
RDX, RDX_H,
RBX, RBX_H,
R8, R8_H,
@@ -403,11 +491,11 @@
R11, R11_H,
R13, R13_H,
R14, R14_H);
// Dynamic register class that selects between long_no_rcx_reg_no_rbp and long_no_rcx_reg_with_rbp.
-reg_class_dynamic long_no_rcx_reg(long_no_rcx_reg_no_rbp, long_no_rcx_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic long_no_rcx_reg0(long_no_rcx_reg0_no_rbp, long_no_rcx_reg0_with_rbp, %{ PreserveFramePointer %});
// Singleton class for RAX long register
reg_class long_rax_reg(RAX, RAX_H);
// Singleton class for RCX long register
@@ -415,11 +503,11 @@
// Singleton class for RDX long register
reg_class long_rdx_reg(RDX, RDX_H);
// Class for all int registers (excluding RSP)
-reg_class int_reg_with_rbp(RAX,
+reg_class int_reg0_with_rbp(RAX,
RDX,
RBP,
RDI,
RSI,
RCX,
@@ -430,11 +518,11 @@
R11,
R13,
R14);
// Class for all int registers (excluding RSP and RBP)
-reg_class int_reg_no_rbp(RAX,
+reg_class int_reg0_no_rbp(RAX,
RDX,
RDI,
RSI,
RCX,
RBX,
@@ -444,14 +532,14 @@
R11,
R13,
R14);
// Dynamic register class that selects between int_reg_no_rbp and int_reg_with_rbp.
-reg_class_dynamic int_reg(int_reg_no_rbp, int_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic int_reg0(int_reg0_no_rbp, int_reg0_with_rbp, %{ PreserveFramePointer %});
// Class for all int registers (excluding RCX and RSP)
-reg_class int_no_rcx_reg_with_rbp(RAX,
+reg_class int_no_rcx_reg0_with_rbp(RAX,
RDX,
RBP,
RDI,
RSI,
RBX,
@@ -461,11 +549,11 @@
R11,
R13,
R14);
// Class for all int registers (excluding RCX, RSP, and RBP)
-reg_class int_no_rcx_reg_no_rbp(RAX,
+reg_class int_no_rcx_reg0_no_rbp(RAX,
RDX,
RDI,
RSI,
RBX,
R8,
@@ -474,14 +562,14 @@
R11,
R13,
R14);
// Dynamic register class that selects between int_no_rcx_reg_no_rbp and int_no_rcx_reg_with_rbp.
-reg_class_dynamic int_no_rcx_reg(int_no_rcx_reg_no_rbp, int_no_rcx_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic int_no_rcx_reg0(int_no_rcx_reg0_no_rbp, int_no_rcx_reg0_with_rbp, %{ PreserveFramePointer %});
// Class for all int registers (excluding RAX, RDX, and RSP)
-reg_class int_no_rax_rdx_reg_with_rbp(RBP,
+reg_class int_no_rax_rdx_reg0_with_rbp(RBP,
RDI,
RSI,
RCX,
RBX,
R8,
@@ -490,11 +578,11 @@
R11,
R13,
R14);
// Class for all int registers (excluding RAX, RDX, RSP, and RBP)
-reg_class int_no_rax_rdx_reg_no_rbp(RDI,
+reg_class int_no_rax_rdx_reg0_no_rbp(RDI,
RSI,
RCX,
RBX,
R8,
R9,
@@ -502,11 +590,11 @@
R11,
R13,
R14);
// Dynamic register class that selects between int_no_rax_rdx_reg_no_rbp and int_no_rax_rdx_reg_with_rbp.
-reg_class_dynamic int_no_rax_rdx_reg(int_no_rax_rdx_reg_no_rbp, int_no_rax_rdx_reg_with_rbp, %{ PreserveFramePointer %});
+reg_class_dynamic int_no_rax_rdx_reg0(int_no_rax_rdx_reg0_no_rbp, int_no_rax_rdx_reg0_with_rbp, %{ PreserveFramePointer %});
// Singleton class for RAX int register
reg_class int_rax_reg(RAX);
// Singleton class for RBX int register
@@ -527,16 +615,139 @@
%}
//----------SOURCE BLOCK-------------------------------------------------------
// This is a block of C++ code which provides values, functions, and
// definitions necessary in the rest of the architecture description
+source_hpp %{
+
+extern RegMask _ANY_REG_mask;
+extern RegMask _PTR_REG_mask;
+extern RegMask _PTR_REG_NO_RBP_mask;
+extern RegMask _PTR_NO_RAX_REG_mask;
+extern RegMask _PTR_NO_RAX_RBX_REG_mask;
+extern RegMask _LONG_REG_mask;
+extern RegMask _LONG_NO_RAX_RDX_REG_mask;
+extern RegMask _LONG_NO_RCX_REG_mask;
+extern RegMask _INT_REG_mask;
+extern RegMask _INT_NO_RAX_RDX_REG_mask;
+extern RegMask _INT_NO_RCX_REG_mask;
+
+extern RegMask _STACK_OR_PTR_REG_mask;
+extern RegMask _STACK_OR_LONG_REG_mask;
+extern RegMask _STACK_OR_INT_REG_mask;
+
+inline const RegMask& STACK_OR_PTR_REG_mask() { return _STACK_OR_PTR_REG_mask; }
+inline const RegMask& STACK_OR_LONG_REG_mask() { return _STACK_OR_LONG_REG_mask; }
+inline const RegMask& STACK_OR_INT_REG_mask() { return _STACK_OR_INT_REG_mask; }
+
+%}
+
source %{
#define RELOC_IMM64 Assembler::imm_operand
#define RELOC_DISP32 Assembler::disp32_operand
#define __ _masm.
+RegMask _ANY_REG_mask;
+RegMask _PTR_REG_mask;
+RegMask _PTR_REG_NO_RBP_mask;
+RegMask _PTR_NO_RAX_REG_mask;
+RegMask _PTR_NO_RAX_RBX_REG_mask;
+RegMask _LONG_REG_mask;
+RegMask _LONG_NO_RAX_RDX_REG_mask;
+RegMask _LONG_NO_RCX_REG_mask;
+RegMask _INT_REG_mask;
+RegMask _INT_NO_RAX_RDX_REG_mask;
+RegMask _INT_NO_RCX_REG_mask;
+RegMask _STACK_OR_PTR_REG_mask;
+RegMask _STACK_OR_LONG_REG_mask;
+RegMask _STACK_OR_INT_REG_mask;
+
+#ifdef ASSERT
+static bool same_mask(const RegMask &a, const RegMask &b) {
+ RegMask a_sub_b = a; a_sub_b.SUBTRACT(b);
+ RegMask b_sub_a = b; b_sub_a.SUBTRACT(a);
+ return a_sub_b.Size() == 0 && b_sub_a.Size() == 0;
+}
+#endif
+
+void reg_mask_init() {
+ // _ALL_REG_mask is generated by adlc from the all_reg register class below.
+ // We derive a number of subsets from it.
+ _ANY_REG_mask = _ALL_REG_mask;
+
+ if (PreserveFramePointer) {
+ _ANY_REG_mask.Remove(OptoReg::as_OptoReg(rbp->as_VMReg()));
+ _ANY_REG_mask.Remove(OptoReg::as_OptoReg(rbp->as_VMReg()->next()));
+ }
+
+ _PTR_REG_mask = _ANY_REG_mask;
+ _PTR_REG_mask.Remove(OptoReg::as_OptoReg(r12->as_VMReg()));
+ _PTR_REG_mask.Remove(OptoReg::as_OptoReg(r12->as_VMReg()->next()));
+ _PTR_REG_mask.Remove(OptoReg::as_OptoReg(rsp->as_VMReg()));
+ _PTR_REG_mask.Remove(OptoReg::as_OptoReg(rsp->as_VMReg()->next()));
+ _PTR_REG_mask.Remove(OptoReg::as_OptoReg(r15->as_VMReg()));
+ _PTR_REG_mask.Remove(OptoReg::as_OptoReg(r15->as_VMReg()->next()));
+
+ _STACK_OR_PTR_REG_mask = _PTR_REG_mask;
+ _STACK_OR_PTR_REG_mask.OR(STACK_OR_STACK_SLOTS_mask());
+
+ _PTR_REG_NO_RBP_mask = _PTR_REG_mask;
+ _PTR_REG_NO_RBP_mask.Remove(OptoReg::as_OptoReg(rbp->as_VMReg()));
+ _PTR_REG_NO_RBP_mask.Remove(OptoReg::as_OptoReg(rbp->as_VMReg()->next()));
+
+ _PTR_NO_RAX_REG_mask = _PTR_REG_mask;
+ _PTR_NO_RAX_REG_mask.Remove(OptoReg::as_OptoReg(rax->as_VMReg()));
+ _PTR_NO_RAX_REG_mask.Remove(OptoReg::as_OptoReg(rax->as_VMReg()->next()));
+
+ _PTR_NO_RAX_RBX_REG_mask = _PTR_NO_RAX_REG_mask;
+ _PTR_NO_RAX_RBX_REG_mask.Remove(OptoReg::as_OptoReg(rbx->as_VMReg()));
+ _PTR_NO_RAX_RBX_REG_mask.Remove(OptoReg::as_OptoReg(rbx->as_VMReg()->next()));
+
+ _LONG_REG_mask = _PTR_REG_mask;
+ _STACK_OR_LONG_REG_mask = _LONG_REG_mask;
+ _STACK_OR_LONG_REG_mask.OR(STACK_OR_STACK_SLOTS_mask());
+
+ _LONG_NO_RAX_RDX_REG_mask = _LONG_REG_mask;
+ _LONG_NO_RAX_RDX_REG_mask.Remove(OptoReg::as_OptoReg(rax->as_VMReg()));
+ _LONG_NO_RAX_RDX_REG_mask.Remove(OptoReg::as_OptoReg(rax->as_VMReg()->next()));
+ _LONG_NO_RAX_RDX_REG_mask.Remove(OptoReg::as_OptoReg(rdx->as_VMReg()));
+ _LONG_NO_RAX_RDX_REG_mask.Remove(OptoReg::as_OptoReg(rdx->as_VMReg()->next()));
+
+ _LONG_NO_RCX_REG_mask = _LONG_REG_mask;
+ _LONG_NO_RCX_REG_mask.Remove(OptoReg::as_OptoReg(rcx->as_VMReg()));
+ _LONG_NO_RCX_REG_mask.Remove(OptoReg::as_OptoReg(rcx->as_VMReg()->next()));
+
+ _INT_REG_mask = _ALL_INT_REG_mask;
+ _INT_REG_mask.Remove(OptoReg::as_OptoReg(r12->as_VMReg()));
+ if (PreserveFramePointer) {
+ _INT_REG_mask.Remove(OptoReg::as_OptoReg(rbp->as_VMReg()));
+ }
+
+ _STACK_OR_INT_REG_mask = _INT_REG_mask;
+ _STACK_OR_INT_REG_mask.OR(STACK_OR_STACK_SLOTS_mask());
+
+ _INT_NO_RAX_RDX_REG_mask = _INT_REG_mask;
+ _INT_NO_RAX_RDX_REG_mask.Remove(OptoReg::as_OptoReg(rax->as_VMReg()));
+ _INT_NO_RAX_RDX_REG_mask.Remove(OptoReg::as_OptoReg(rdx->as_VMReg()));
+
+ _INT_NO_RCX_REG_mask = _INT_REG_mask;
+ _INT_NO_RCX_REG_mask.Remove(OptoReg::as_OptoReg(rcx->as_VMReg()));
+
+ assert(same_mask(_ANY_REG_mask, ANY_REG0_mask()), "!");
+ assert(same_mask(_PTR_REG_mask, PTR_REG0_mask()), "!");
+ assert(same_mask(_PTR_REG_NO_RBP_mask, PTR_REG0_NO_RBP_mask()), "!");
+ assert(same_mask(_PTR_NO_RAX_REG_mask, PTR_NO_RAX_REG0_mask()), "!");
+ assert(same_mask(_PTR_NO_RAX_RBX_REG_mask, PTR_NO_RAX_RBX_REG0_mask()), "!");
+ assert(same_mask(_LONG_REG_mask, LONG_REG0_mask()), "!");
+ assert(same_mask(_LONG_NO_RAX_RDX_REG_mask, LONG_NO_RAX_RDX_REG0_mask()), "!");
+ assert(same_mask(_LONG_NO_RCX_REG_mask, LONG_NO_RCX_REG0_mask()), "!");
+ assert(same_mask(_INT_REG_mask, INT_REG0_mask()), "!");
+ assert(same_mask(_INT_NO_RAX_RDX_REG_mask, INT_NO_RAX_RDX_REG0_mask()), "!");
+ assert(same_mask(_INT_NO_RCX_REG_mask, INT_NO_RCX_REG0_mask()), "!");
+}
+
static bool generate_vzeroupper(Compile* C) {
return (VM_Version::supports_vzeroupper() && (C->max_vector_size() > 16 || C->clear_upper_avx() == true)) ? true: false; // Generate vzeroupper
}
static int clear_avx_size() {
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