fallback: legalize: G_EXTRACT s64,s96

Run:	main-04ca53e65f-20261014-105623
Kind:	fallback
Category:	legalize: G_EXTRACT s64,s96 NEW
Occurrences:	1 in 1 configs, 1 test files
Snippet from:	fp128.1518aa6195.ll (mutant of fp128.ll) @fptosi_fp128_to_i96 via llvm-extract
Config:	`-mtriple=riscv64 -verify-machineinstrs`
Local check:	reproduces at 04ca53e65f
Compiler Explorer:	not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind
define i96 @fptosi_fp128_to_i96(fp128 %a) #0 {
  %result = fptosi fp128 %a to i96
  store i96 %result, ptr poison, align 4
  ret i96 %result
}

attributes #0 = { nounwind }

Reproduce:

llc -mtriple=riscv64 -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -verify-machineinstrs -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %8:_(s64) = G_EXTRACT %3:_(s96), 0 (in function: fptosi_fp128_to_i96)
warning: Instruction selection used fallback path for fptosi_fp128_to_i96

Occurrences (1):

Input	Function	Config
fp128.1518aa6195.ll (mutant of fp128.ll)	fptosi_fp128_to_i96	`-mtriple=riscv64 -verify-machineinstrs`

Generated 2026-10-15 08:05 UTC.