commit a6e50e40e6ddaaefff944dc97379b51af7687cae
author Simon Cook <simon.cook@embecosm.com> Tue Dec 10 16:44:48 2019 +0000
committer Simon Cook <simon.cook@embecosm.com> Tue Dec 10 16:44:48 2019 +0000
tree 1f9446dac22498e4cf2c6315eb42842d48efe7ec
parent 0be81968a283fd4161cb9ac9748d5ed200926292

[RISCV] Improve assembler missing feature warnings

This adds support for printing improved missing feature error messages
from the assembler, which now indicates which feature caused the parse
to fail.

Differential Revision: https://reviews.llvm.org/D69899

llvm/test/MC/RISCV/rv32c-invalid.s

diff --git a/llvm/test/MC/RISCV/rv32c-invalid.s b/llvm/test/MC/RISCV/rv32c-invalid.s
index 1ebd252..29cf0ac 100644
--- a/llvm/test/MC/RISCV/rv32c-invalid.s
+++ b/llvm/test/MC/RISCV/rv32c-invalid.s
@@ -22,15 +22,15 @@
 c.jr  x0 # CHECK: :[[@LINE]]:7: error: invalid operand for instruction
 c.jalr  zero # CHECK: :[[@LINE]]:9: error: invalid operand for instruction
 c.addi  x0, x0, 1 # CHECK: :[[@LINE]]:13: error: immediate must be zero
-c.li  zero, 2 # CHECK: :[[@LINE]]:1: error: instruction use requires an option to be enabled
+c.li  zero, 2 # CHECK: :[[@LINE]]:1: error: instruction requires the following: RVC Hint Instructions
 c.slli  zero, zero, 4 # CHECK: :[[@LINE]]:15: error: invalid operand for instruction
-c.mv  zero, s0 # CHECK: :[[@LINE]]:1: error: instruction use requires an option to be enabled
+c.mv  zero, s0 # CHECK: :[[@LINE]]:1: error: instruction requires the following: RVC Hint Instructions
 c.mv  ra, x0 # CHECK: :[[@LINE]]:11: error: invalid operand for instruction
 c.add  ra, ra, x0 # CHECK: :[[@LINE]]:16: error: invalid operand for instruction
 c.add  zero, zero, sp # CHECK: :[[@LINE]]:14: error: invalid operand for instruction
 
 ## GPRNoX0X2
-c.lui x0, 4 # CHECK: :[[@LINE]]:1: error: instruction use requires an option to be enabled
+c.lui x0, 4 # CHECK: :[[@LINE]]:1: error: instruction requires the following: RVC Hint Instructions
 c.lui x2, 4 # CHECK: :[[@LINE]]:7: error: invalid operand for instruction
 
 ## SP
@@ -55,7 +55,7 @@
 c.andi a0, %hi(foo) # CHECK: :[[@LINE]]:12: error: immediate must be an integer in the range [-32, 31]
 
 ## simm6nonzero
-c.addi t0, 0 # CHECK: :[[@LINE]]:1: error: instruction use requires an option to be enabled
+c.addi t0, 0 # CHECK: :[[@LINE]]:1: error: instruction requires the following: RVC Hint Instructions
 c.addi t0, -33 # CHECK: :[[@LINE]]:12: error: immediate must be non-zero in the range [-32, 31]
 c.addi t0, 32 # CHECK: :[[@LINE]]:12: error: immediate must be non-zero in the range [-32, 31]
 c.addi t0, foo # CHECK: :[[@LINE]]:12: error: immediate must be non-zero in the range [-32, 31]