fallback: legalize: G_SET_FPENV s64
| Run: | main-04ca53e65f-20261014-105623 |
| Kind: | fallback |
| Category: | legalize: G_SET_FPENV s64 |
| Occurrences: | 3 in 3 configs, 1 test files |
| Snippet from: | fpenv-xlen.ll @func_set_fpenv via llvm-extract |
| Config: | -mtriple=riscv64 -mattr=+f -verify-machineinstrs |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
define void @func_set_fpenv(i64 %fpenv) {
entry:
call void @llvm.set.fpenv.i64(i64 %fpenv)
ret void
}
; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite)
declare void @llvm.set.fpenv.i64(i64) #0
attributes #0 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite) }
Reproduce:
llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+f -verify-machineinstrs -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: G_SET_FPENV %0:_(s64) (in function: func_set_fpenv)
warning: Instruction selection used fallback path for func_set_fpenv
Occurrences (3):
| Input | Function | Config |
|---|
| fpenv-xlen.ll | func_set_fpenv | -mtriple=riscv64 -mattr=+f -verify-machineinstrs |
| fpenv-xlen.ll | func_set_fpenv | -mtriple=riscv64 -mattr=+f -verify-machineinstrs -O0 |
| fpenv-xlen.ll | func_set_fpenv | -mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.