fallback: legalize: G_INTRINSIC_W_SIDE

fallback: legalize: G_INTRINSIC_W_SIDE_EFFECTS s64

Run:	explore-04ca53e65f-20261014-114124
Kind:	fallback
Category:	legalize: G_INTRINSIC_W_SIDE_EFFECTS s64
Occurrences:	2 in 1 configs, 1 test files
Snippet from:	rv64-stackmap.ll @osrinline via llvm-extract
Config:	`-mtriple=riscv64`
Local check:	reproduces at 04ca53e65f
Compiler Explorer:	not uploaded (over --godbolt-limit or disabled)

Snippet:

define void @osrinline(i64 %a, i64 %b) {
entry:
  call void inttoptr (i64 244837814094590 to ptr)()
  call void (i64, i32, ...) @llvm.experimental.stackmap(i64 3, i32 12, i64 %a, i64 %b)
  ret void
}

; Function Attrs: nocallback nofree nosync willreturn
declare void @llvm.experimental.stackmap(i64 immarg, i32 immarg, ...) #0

attributes #0 = { nocallback nofree nosync willreturn }

Reproduce:

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

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: G_INTRINSIC_W_SIDE_EFFECTS intrinsic(@llvm.experimental.stackmap), 3, 12, %0:_(s64), %1:_(s64) (in function: osrinline)
warning: Instruction selection used fallback path for osrinline

Occurrences (2):

Input	Function	Config
rv64-stackmap.ll	osrinline	`-mtriple=riscv64`
rv64-stackmap.71d8170b71.ll (mutant of rv64-stackmap.ll)	osrinline	`-mtriple=riscv64`

Generated 2026-10-15 08:05 UTC.