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path: root/lib/Target/X86/InstPrinter/X86InstComments.cpp
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Diffstat (limited to 'lib/Target/X86/InstPrinter/X86InstComments.cpp')
-rw-r--r--lib/Target/X86/InstPrinter/X86InstComments.cpp266
1 files changed, 224 insertions, 42 deletions
diff --git a/lib/Target/X86/InstPrinter/X86InstComments.cpp b/lib/Target/X86/InstPrinter/X86InstComments.cpp
index baf6507..a8f15e6 100644
--- a/lib/Target/X86/InstPrinter/X86InstComments.cpp
+++ b/lib/Target/X86/InstPrinter/X86InstComments.cpp
@@ -28,13 +28,116 @@ using namespace llvm;
/// EmitAnyX86InstComments - This function decodes x86 instructions and prints
/// newline terminated strings to the specified string if desired. This
/// information is shown in disassembly dumps when verbose assembly is enabled.
-void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
+bool llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
const char *(*getRegName)(unsigned)) {
// If this is a shuffle operation, the switch should fill in this state.
SmallVector<int, 8> ShuffleMask;
const char *DestName = nullptr, *Src1Name = nullptr, *Src2Name = nullptr;
switch (MI->getOpcode()) {
+ default:
+ // Not an instruction for which we can decode comments.
+ return false;
+
+ case X86::BLENDPDrri:
+ case X86::VBLENDPDrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::BLENDPDrmi:
+ case X86::VBLENDPDrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v2f64,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+ case X86::VBLENDPDYrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::VBLENDPDYrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v4f64,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+
+ case X86::BLENDPSrri:
+ case X86::VBLENDPSrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::BLENDPSrmi:
+ case X86::VBLENDPSrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v4f32,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+ case X86::VBLENDPSYrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::VBLENDPSYrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v8f32,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+
+ case X86::PBLENDWrri:
+ case X86::VPBLENDWrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::PBLENDWrmi:
+ case X86::VPBLENDWrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v8i16,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+ case X86::VPBLENDWYrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::VPBLENDWYrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v16i16,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+
+ case X86::VPBLENDDrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::VPBLENDDrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v4i32,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+
+ case X86::VPBLENDDYrri:
+ Src2Name = getRegName(MI->getOperand(2).getReg());
+ // FALL THROUGH.
+ case X86::VPBLENDDYrmi:
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodeBLENDMask(MVT::v8i32,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ break;
+
case X86::INSERTPSrr:
case X86::VINSERTPSrr:
DestName = getRegName(MI->getOperand(0).getReg());
@@ -60,6 +163,80 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
DecodeMOVHLPSMask(2, ShuffleMask);
break;
+ case X86::MOVSLDUPrr:
+ case X86::VMOVSLDUPrr:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ // FALL THROUGH.
+ case X86::MOVSLDUPrm:
+ case X86::VMOVSLDUPrm:
+ DestName = getRegName(MI->getOperand(0).getReg());
+ DecodeMOVSLDUPMask(MVT::v4f32, ShuffleMask);
+ break;
+
+ case X86::VMOVSHDUPYrr:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ // FALL THROUGH.
+ case X86::VMOVSHDUPYrm:
+ DestName = getRegName(MI->getOperand(0).getReg());
+ DecodeMOVSHDUPMask(MVT::v8f32, ShuffleMask);
+ break;
+
+ case X86::VMOVSLDUPYrr:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ // FALL THROUGH.
+ case X86::VMOVSLDUPYrm:
+ DestName = getRegName(MI->getOperand(0).getReg());
+ DecodeMOVSLDUPMask(MVT::v8f32, ShuffleMask);
+ break;
+
+ case X86::MOVSHDUPrr:
+ case X86::VMOVSHDUPrr:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ // FALL THROUGH.
+ case X86::MOVSHDUPrm:
+ case X86::VMOVSHDUPrm:
+ DestName = getRegName(MI->getOperand(0).getReg());
+ DecodeMOVSHDUPMask(MVT::v4f32, ShuffleMask);
+ break;
+
+ case X86::PSLLDQri:
+ case X86::VPSLLDQri:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodePSLLDQMask(MVT::v16i8,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ break;
+
+ case X86::VPSLLDQYri:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodePSLLDQMask(MVT::v32i8,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ break;
+
+ case X86::PSRLDQri:
+ case X86::VPSRLDQri:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodePSRLDQMask(MVT::v16i8,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ break;
+
+ case X86::VPSRLDQYri:
+ Src1Name = getRegName(MI->getOperand(1).getReg());
+ DestName = getRegName(MI->getOperand(0).getReg());
+ if(MI->getOperand(MI->getNumOperands()-1).isImm())
+ DecodePSRLDQMask(MVT::v32i8,
+ MI->getOperand(MI->getNumOperands()-1).getImm(),
+ ShuffleMask);
+ break;
+
case X86::PALIGNR128rr:
case X86::VPALIGNR128rr:
Src1Name = getRegName(MI->getOperand(2).getReg());
@@ -489,54 +666,59 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
break;
}
+ // The only comments we decode are shuffles, so give up if we were unable to
+ // decode a shuffle mask.
+ if (ShuffleMask.empty())
+ return false;
- // If this was a shuffle operation, print the shuffle mask.
- if (!ShuffleMask.empty()) {
- if (!DestName) DestName = Src1Name;
- OS << (DestName ? DestName : "mem") << " = ";
+ if (!DestName) DestName = Src1Name;
+ OS << (DestName ? DestName : "mem") << " = ";
- // If the two sources are the same, canonicalize the input elements to be
- // from the first src so that we get larger element spans.
- if (Src1Name == Src2Name) {
- for (unsigned i = 0, e = ShuffleMask.size(); i != e; ++i) {
- if ((int)ShuffleMask[i] >= 0 && // Not sentinel.
- ShuffleMask[i] >= (int)e) // From second mask.
- ShuffleMask[i] -= e;
- }
+ // If the two sources are the same, canonicalize the input elements to be
+ // from the first src so that we get larger element spans.
+ if (Src1Name == Src2Name) {
+ for (unsigned i = 0, e = ShuffleMask.size(); i != e; ++i) {
+ if ((int)ShuffleMask[i] >= 0 && // Not sentinel.
+ ShuffleMask[i] >= (int)e) // From second mask.
+ ShuffleMask[i] -= e;
}
+ }
- // The shuffle mask specifies which elements of the src1/src2 fill in the
- // destination, with a few sentinel values. Loop through and print them
- // out.
- for (unsigned i = 0, e = ShuffleMask.size(); i != e; ++i) {
- if (i != 0)
+ // The shuffle mask specifies which elements of the src1/src2 fill in the
+ // destination, with a few sentinel values. Loop through and print them
+ // out.
+ for (unsigned i = 0, e = ShuffleMask.size(); i != e; ++i) {
+ if (i != 0)
+ OS << ',';
+ if (ShuffleMask[i] == SM_SentinelZero) {
+ OS << "zero";
+ continue;
+ }
+
+ // Otherwise, it must come from src1 or src2. Print the span of elements
+ // that comes from this src.
+ bool isSrc1 = ShuffleMask[i] < (int)ShuffleMask.size();
+ const char *SrcName = isSrc1 ? Src1Name : Src2Name;
+ OS << (SrcName ? SrcName : "mem") << '[';
+ bool IsFirst = true;
+ while (i != e && (int)ShuffleMask[i] != SM_SentinelZero &&
+ (ShuffleMask[i] < (int)ShuffleMask.size()) == isSrc1) {
+ if (!IsFirst)
OS << ',';
- if (ShuffleMask[i] == SM_SentinelZero) {
- OS << "zero";
- continue;
- }
-
- // Otherwise, it must come from src1 or src2. Print the span of elements
- // that comes from this src.
- bool isSrc1 = ShuffleMask[i] < (int)ShuffleMask.size();
- const char *SrcName = isSrc1 ? Src1Name : Src2Name;
- OS << (SrcName ? SrcName : "mem") << '[';
- bool IsFirst = true;
- while (i != e &&
- (int)ShuffleMask[i] >= 0 &&
- (ShuffleMask[i] < (int)ShuffleMask.size()) == isSrc1) {
- if (!IsFirst)
- OS << ',';
- else
- IsFirst = false;
+ else
+ IsFirst = false;
+ if (ShuffleMask[i] == SM_SentinelUndef)
+ OS << "u";
+ else
OS << ShuffleMask[i] % ShuffleMask.size();
- ++i;
- }
- OS << ']';
- --i; // For loop increments element #.
+ ++i;
}
- //MI->print(OS, 0);
- OS << "\n";
+ OS << ']';
+ --i; // For loop increments element #.
}
+ //MI->print(OS, 0);
+ OS << "\n";
+ // We successfully added a comment to this instruction.
+ return true;
}
generated by cgit v1.1 at 2024-05-21 03:52:14 +0000