[llvm] [AMDGPU][AsmParser][NFC] Remove a misleading comment. (PR #102604)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-amdgpu

Author: Ivan Kosarev (kosarev)

<details>
<summary>Changes</summary>

The work of ParseRegularReg() should remain to be parsing the register as it was specified, and not to try translate it to anything else.

It's up to operand predicates to decide on what is and is not an acceptable register for an operand, including considering its expected register class, and for the rest of the AsmParser infrastructure to handle it respectively from there on.

---
Full diff: https://github.com/llvm/llvm-project/pull/102604.diff


1 Files Affected:

- (modified) llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp (-4) 


``````````diff
diff --git a/llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp b/llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
index bbd9d75aac0e91..fc4cf57281d9b0 100644
--- a/llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
+++ b/llvm/lib/Target/AMDGPU/AsmParser/AMDGPUAsmParser.cpp
@@ -2937,10 +2937,6 @@ unsigned AMDGPUAsmParser::ParseRegularReg(RegisterKind &RegKind,
   StringRef RegSuffix = RegName.substr(RI->Name.size());
   unsigned SubReg = NoSubRegister;
   if (!RegSuffix.empty()) {
-    // We don't know the opcode till we are done parsing, so we don't know if
-    // registers should be 16 or 32 bit. It is therefore mandatory to put .l or
-    // .h to correctly specify 16 bit registers. We also can't determine class
-    // VGPR_16_Lo128 or VGPR_16, so always parse them as VGPR_16.
     if (RegSuffix.consume_back(".l"))
       SubReg = AMDGPU::lo16;
     else if (RegSuffix.consume_back(".h"))

``````````

</details>


https://github.com/llvm/llvm-project/pull/102604