[llvm] [RISCV] Generate 8alt/16alt version error message for zvfofp8min (PR #180450)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: Jim Lin (tclin914)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/180450.diff


3 Files Affected:

- (modified) llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp (+1) 
- (modified) llvm/test/MC/RISCV/rvv/invalid-alt.s (+2) 
- (modified) llvm/test/MC/RISCV/rvv/vsetvl-alt.s (+9) 


``````````diff
diff --git a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
index ea5713159fe48..521b14e498af5 100644
--- a/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
+++ b/llvm/lib/Target/RISCV/AsmParser/RISCVAsmParser.cpp
@@ -2411,6 +2411,7 @@ ParseStatus RISCVAsmParser::parseVTypeI(OperandVector &Operands) {
 
 bool RISCVAsmParser::generateVTypeError(SMLoc ErrorLoc) {
   if (STI->hasFeature(RISCV::FeatureStdExtZvfbfa) ||
+      STI->hasFeature(RISCV::FeatureStdExtZvfofp8min) ||
       STI->hasFeature(RISCV::FeatureVendorXSfvfbfexp16e))
     return Error(
         ErrorLoc,
diff --git a/llvm/test/MC/RISCV/rvv/invalid-alt.s b/llvm/test/MC/RISCV/rvv/invalid-alt.s
index 362bcb38aabb0..108bbbce9e3fe 100644
--- a/llvm/test/MC/RISCV/rvv/invalid-alt.s
+++ b/llvm/test/MC/RISCV/rvv/invalid-alt.s
@@ -1,5 +1,7 @@
 # RUN: not llvm-mc -triple=riscv64 --mattr=+experimental-zvfbfa --mattr=+f %s 2>&1 \
 # RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+# RUN: not llvm-mc -triple=riscv64 --mattr=+experimental-zvfofp8min --mattr=+f %s 2>&1 \
+# RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
 
 vsetvli a2, a0, e32alt, m1, ta, ma
 # CHECK-ERROR: operand must be e[8|8alt|16|16alt|32|64],m[1|2|4|8|f2|f4|f8],[ta|tu],[ma|mu]
diff --git a/llvm/test/MC/RISCV/rvv/vsetvl-alt.s b/llvm/test/MC/RISCV/rvv/vsetvl-alt.s
index f4de08d762789..8a10623f515a6 100644
--- a/llvm/test/MC/RISCV/rvv/vsetvl-alt.s
+++ b/llvm/test/MC/RISCV/rvv/vsetvl-alt.s
@@ -7,6 +7,15 @@
 # RUN:        | FileCheck %s --check-prefix=CHECK-INST
 # RUN: llvm-mc -triple=riscv64 -filetype=obj --mattr=+experimental-zvfbfa %s \
 # RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
+# RUN: llvm-mc -triple=riscv64 -show-encoding --mattr=+experimental-zvfofp8min %s \
+# RUN:        | FileCheck %s --check-prefixes=CHECK-ENCODING,CHECK-INST
+# RUN: not llvm-mc -triple=riscv64 -show-encoding %s 2>&1 \
+# RUN:        | FileCheck %s --check-prefix=CHECK-ERROR
+# RUN: llvm-mc -triple=riscv64 -filetype=obj --mattr=+experimental-zvfofp8min %s \
+# RUN:        | llvm-objdump -d --mattr=+experimental-zvfofp8min --no-print-imm-hex - \
+# RUN:        | FileCheck %s --check-prefix=CHECK-INST
+# RUN: llvm-mc -triple=riscv64 -filetype=obj --mattr=+experimental-zvfofp8min %s \
+# RUN:        | llvm-objdump -d - | FileCheck %s --check-prefix=CHECK-UNKNOWN
 
 vsetvli a2, a0, e8alt, m1, ta, ma
 # CHECK-INST: vsetvli a2, a0, e8alt, m1, ta, ma

``````````

</details>


https://github.com/llvm/llvm-project/pull/180450