[llvm] [RISCV] Only allow up to e64 in vsetvli (PR #92010)
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Mon May 13 11:48:47 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-risc-v
Author: Palmer Dabbelt (palmer-dabbelt)
<details>
<summary>Changes</summary>
These larger SEWs aren't in the ratified V spec. Thanks to dzaima and sorear on IRC for pointing this one out.
---
Full diff: https://github.com/llvm/llvm-project/pull/92010.diff
2 Files Affected:
- (modified) llvm/include/llvm/TargetParser/RISCVTargetParser.h (+1-1)
- (modified) llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp (+1-1)
``````````diff
diff --git a/llvm/include/llvm/TargetParser/RISCVTargetParser.h b/llvm/include/llvm/TargetParser/RISCVTargetParser.h
index cdd19189f8dc7..5b1494efe7bdc 100644
--- a/llvm/include/llvm/TargetParser/RISCVTargetParser.h
+++ b/llvm/include/llvm/TargetParser/RISCVTargetParser.h
@@ -61,7 +61,7 @@ enum {
namespace RISCVVType {
// Is this a SEW value that can be encoded into the VTYPE format.
inline static bool isValidSEW(unsigned SEW) {
- return isPowerOf2_32(SEW) && SEW >= 8 && SEW <= 1024;
+ return isPowerOf2_32(SEW) && SEW >= 8 && SEW <= 64;
}
// Is this a LMUL value that can be encoded into the VTYPE format.
diff --git a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
index 123b37442329f..6bdd038bd07e9 100644
--- a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
+++ b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
@@ -2227,7 +2227,7 @@ bool RISCVAsmParser::generateVTypeError(SMLoc ErrorLoc) {
return Error(
ErrorLoc,
"operand must be "
- "e[8|16|32|64|128|256|512|1024],m[1|2|4|8|f2|f4|f8],[ta|tu],[ma|mu]");
+ "e[8|16|32|64],m[1|2|4|8|f2|f4|f8],[ta|tu],[ma|mu]");
}
ParseStatus RISCVAsmParser::parseMaskReg(OperandVector &Operands) {
``````````
</details>
https://github.com/llvm/llvm-project/pull/92010
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