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[CodeGen] Print stack object references as %(fixed-)stack.0 in both MIR and debug output

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Work towards the unification of MIR and debug output by printing
`%stack.0` instead of `<fi#0>`, and `%fixed-stack.0` instead of
`<fi#-4>` (supposing there are 4 fixed stack objects).

Only debug syntax is affected.

Differential Revision: https://reviews.llvm.org/D41027

llvm-svn: 320827
This commit is contained in:
Francis Visoiu Mistrih 2017-12-15 16:33:45 +00:00
parent cdd4b18b3c
commit 7802b89265
7 changed files with 55 additions and 28 deletions
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5
include/llvm/CodeGen/MachineOperand.h
View File

@ -239,12 +239,17 @@ public:
/// called to check this.
static void printSubregIdx(raw_ostream &OS, uint64_t Index,
const TargetRegisterInfo *TRI);
/// Print operand target flags.
static void printTargetFlags(raw_ostream& OS, const MachineOperand &Op);
/// Print a MCSymbol as an operand.
static void printSymbol(raw_ostream &OS, MCSymbol &Sym);
/// Print a stack object reference.
static void printStackObjectReference(raw_ostream &OS, unsigned FrameIndex,
bool IsFixed, StringRef Name);
/// Print the MachineOperand to \p os.
/// Providing a valid \p TRI and \p IntrinsicInfo results in a more
/// target-specific printing. If \p TRI and \p IntrinsicInfo are null, the

9
lib/CodeGen/MIRPrinter.cpp
View File

@ -758,13 +758,8 @@ void MIPrinter::printStackObjectReference(int FrameIndex) {
assert(ObjectInfo != StackObjectOperandMapping.end() &&
"Invalid frame index");
const FrameIndexOperand &Operand = ObjectInfo->second;
if (Operand.IsFixed) {
OS << "%fixed-stack." << Operand.ID;
return;
}
OS << "%stack." << Operand.ID;
if (!Operand.Name.empty())
OS << '.' << Operand.Name;
MachineOperand::printStackObjectReference(OS, Operand.ID, Operand.IsFixed,
Operand.Name);
}
void MIPrinter::printOffset(int64_t Offset) {

31
lib/CodeGen/MachineOperand.cpp
View File

@ -14,6 +14,7 @@
#include "llvm/CodeGen/MachineOperand.h"
#include "llvm/Analysis/Loads.h"
#include "llvm/CodeGen/MIRPrinter.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineJumpTableInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/TargetInstrInfo.h"
@ -476,6 +477,19 @@ void MachineOperand::printSymbol(raw_ostream &OS, MCSymbol &Sym) {
OS << "<mcsymbol " << Sym << ">";
}
void MachineOperand::printStackObjectReference(raw_ostream &OS,
unsigned FrameIndex,
bool IsFixed, StringRef Name) {
if (IsFixed) {
OS << "%fixed-stack." << FrameIndex;
return;
}
OS << "%stack." << FrameIndex;
if (!Name.empty())
OS << '.' << Name;
}
void MachineOperand::print(raw_ostream &OS, const TargetRegisterInfo *TRI,
const TargetIntrinsicInfo *IntrinsicInfo) const {
tryToGetTargetInfo(*this, TRI, IntrinsicInfo);
@ -574,9 +588,22 @@ void MachineOperand::print(raw_ostream &OS, ModuleSlotTracker &MST,
case MachineOperand::MO_MachineBasicBlock:
OS << printMBBReference(*getMBB());
break;
case MachineOperand::MO_FrameIndex:
OS << "<fi#" << getIndex() << '>';
case MachineOperand::MO_FrameIndex: {
int FrameIndex = getIndex();
bool IsFixed = false;
StringRef Name;
if (const MachineFunction *MF = getMFIfAvailable(*this)) {
const MachineFrameInfo &MFI = MF->getFrameInfo();
IsFixed = MFI.isFixedObjectIndex(FrameIndex);
if (const AllocaInst *Alloca = MFI.getObjectAllocation(FrameIndex))
if (Alloca->hasName())
Name = Alloca->getName();
if (IsFixed)
FrameIndex -= MFI.getObjectIndexBegin();
}
printStackObjectReference(OS, FrameIndex, IsFixed, Name);
break;
}
case MachineOperand::MO_ConstantPoolIndex:
OS << "%const." << getIndex();
printOffset(OS, getOffset());

6
lib/Target/AArch64/AArch64InstrInfo.cpp
View File

@ -2835,7 +2835,7 @@ MachineInstr *AArch64InstrInfo::foldMemoryOperandImpl(
// In this case we can still safely fold away the COPY and generate the
// following spill code:
//
// STRXui %xzr, <fi#0>
// STRXui %xzr, %stack.0
//
// This also eliminates spilled cross register class COPYs (e.g. between x and
// d regs) of the same size. For example:
@ -2891,7 +2891,7 @@ MachineInstr *AArch64InstrInfo::foldMemoryOperandImpl(
// where the physical register source can be widened and stored to the full
// virtual reg destination stack slot, in this case producing:
//
// STRXui %xzr, <fi#0>
// STRXui %xzr, %stack.0
//
if (IsSpill && DstMO.isUndef() &&
TargetRegisterInfo::isPhysicalRegister(SrcReg)) {
@ -2939,7 +2939,7 @@ MachineInstr *AArch64InstrInfo::foldMemoryOperandImpl(
// where we can load the full virtual reg source stack slot, into the subreg
// destination, in this case producing:
//
// LDRWui %0:sub_32<def,read-undef>, <fi#0>
// LDRWui %0:sub_32<def,read-undef>, %stack.0
//
if (IsFill && SrcMO.getSubReg() == 0 && DstMO.isUndef()) {
const TargetRegisterClass *FillRC;

10
lib/Target/X86/README-SSE.txt
View File

@ -167,16 +167,16 @@ Still ok. After register allocation:
cond_next140 (0xa910740, LLVM BB @0xa90beb0):
%eax = MOV32ri -3
%edx = MOV32rm <fi#3>, 1, %noreg, 0
%edx = MOV32rm %stack.3, 1, %noreg, 0
ADD32rm %eax<def&use>, %edx, 1, %noreg, 0
%edx = MOV32rm <fi#7>, 1, %noreg, 0
%edx = MOV32rm %stack.7, 1, %noreg, 0
%edx = MOV32rm %edx, 1, %noreg, 40
IMUL32rr %eax<def&use>, %edx
%esi = MOV32rm <fi#5>, 1, %noreg, 0
%esi = MOV32rm %stack.5, 1, %noreg, 0
%esi = MOV32rm %esi, 1, %noreg, 0
MOV32mr <fi#4>, 1, %noreg, 0, %esi
MOV32mr %stack.4, 1, %noreg, 0, %esi
%eax = LEA32r %esi, 1, %eax, -3
%esi = MOV32rm <fi#7>, 1, %noreg, 0
%esi = MOV32rm %stack.7, 1, %noreg, 0
%esi = MOV32rm %esi, 1, %noreg, 32
%edi = MOV32rr %eax
SHL32ri %edi<def&use>, 4

14
test/CodeGen/AArch64/tailcall_misched_graph.ll
View File

@ -26,19 +26,19 @@ declare void @callee2(i8*, i8*, i8*, i8*, i8*,
; CHECK: fi#-2: {{.*}} fixed, at location [SP+8]
; CHECK: fi#-1: {{.*}} fixed, at location [SP]
; CHECK: [[VRA:%.*]]:gpr64 = LDRXui <fi#-1>
; CHECK: [[VRB:%.*]]:gpr64 = LDRXui <fi#-2>
; CHECK: STRXui %{{.*}}, <fi#-4>
; CHECK: STRXui [[VRB]], <fi#-3>
; CHECK: [[VRA:%.*]]:gpr64 = LDRXui %fixed-stack.3
; CHECK: [[VRB:%.*]]:gpr64 = LDRXui %fixed-stack.2
; CHECK: STRXui %{{.*}}, %fixed-stack.0
; CHECK: STRXui [[VRB]], %fixed-stack.1
; Make sure that there is an dependence edge between fi#-2 and fi#-4.
; Without this edge the scheduler would be free to move the store accross the load.
; CHECK: SU({{.*}}): [[VRB]]:gpr64 = LDRXui <fi#-2>
; CHECK: SU({{.*}}): [[VRB]]:gpr64 = LDRXui %fixed-stack.2
; CHECK-NOT: SU
; CHECK: Successors:
; CHECK: SU([[DEPSTOREB:.*]]): Ord Latency=0
; CHECK: SU([[DEPSTOREA:.*]]): Ord Latency=0
; CHECK: SU([[DEPSTOREA]]): STRXui %{{.*}}, <fi#-4>
; CHECK: SU([[DEPSTOREB]]): STRXui %{{.*}}, <fi#-3>
; CHECK: SU([[DEPSTOREA]]): STRXui %{{.*}}, %fixed-stack.0
; CHECK: SU([[DEPSTOREB]]): STRXui %{{.*}}, %fixed-stack.1

8
test/CodeGen/X86/2010-05-12-FastAllocKills.ll
View File

@ -15,13 +15,13 @@ target triple = "x86_64-apple-darwin"
; The X86FP pass needs good kill flags, like on %fp0 representing %reg1034:
;%bb.5: derived from LLVM BB %bb10
; Predecessors according to CFG: %bb.4 %bb.5
; %fp0 = LD_Fp80m <fi#3>, 1, %reg0, 0, %reg0; mem:LD10[FixedStack3](align=4)
; %fp0 = LD_Fp80m %stack.3, 1, %reg0, 0, %reg0; mem:LD10[FixedStack3](align=4)
; %fp1 = MOV_Fp8080 killed %fp0
; %fp2 = MUL_Fp80m32 %fp1, %rip, 1, %reg0, %const.0, %reg0; mem:LD4[ConstantPool]
; %fp0 = MOV_Fp8080 %fp2
; ST_FpP80m <fi#3>, 1, %reg0, 0, %reg0, killed %fp0; mem:ST10[FixedStack3](align=4)
; ST_FpP80m <fi#4>, 1, %reg0, 0, %reg0, killed %fp1; mem:ST10[FixedStack4](align=4)
; ST_FpP80m <fi#5>, 1, %reg0, 0, %reg0, killed %fp2; mem:ST10[FixedStack5](align=4)
; ST_FpP80m %stack.3, 1, %reg0, 0, %reg0, killed %fp0; mem:ST10[FixedStack3](align=4)
; ST_FpP80m %stack.4, 1, %reg0, 0, %reg0, killed %fp1; mem:ST10[FixedStack4](align=4)
; ST_FpP80m %stack.5, 1, %reg0, 0, %reg0, killed %fp2; mem:ST10[FixedStack5](align=4)
; FP_REG_KILL implicit-def %fp0, implicit-def %fp1, implicit-def %fp2, implicit-def %fp3, implicit-def %fp4, implicit-def %fp5, implicit-def %fp6
; JMP_4 <%bb.5>
; Successors according to CFG: %bb.5