fallback: select: G_CONSTANT

fallback: select: G_CONSTANT_POOL p0

Run:	main-bc8218b282-20261015-074651
Kind:	fallback
Category:	select: G_CONSTANT_POOL p0
Occurrences:	1 in 1 configs, 1 test files
Snippet from:	tail-calls.ll @caller_indirect_args via llvm-extract
Config:	`-code-model=large -mtriple=riscv32 -verify-machineinstrs`
Local check:	reproduces at bc8218b282
Compiler Explorer:	not uploaded (over --godbolt-limit or disabled)

Snippet:

declare i32 @callee_indirect_args(fp128)

; Function Attrs: nounwind
define void @caller_indirect_args() #0 {
entry:
  %call = tail call i32 @callee_indirect_args(fp128 1.000000e+00)
  ret void
}

attributes #0 = { nounwind }

!llvm.module.flags = !{!0}

!0 = !{i32 1, !"ProfileSummary", !1}
!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
!2 = !{!"ProfileFormat", !"InstrProf"}
!3 = !{!"TotalCount", i64 10000}
!4 = !{!"MaxCount", i64 10}
!5 = !{!"MaxInternalCount", i64 1}
!6 = !{!"MaxFunctionCount", i64 1000}
!7 = !{!"NumCounts", i64 3}
!8 = !{!"NumFunctions", i64 3}
!9 = !{!"DetailedSummary", !10}
!10 = !{!11, !12, !13}
!11 = !{i32 10000, i64 100, i32 1}
!12 = !{i32 999000, i64 100, i32 1}
!13 = !{i32 999999, i64 1, i32 2}

Reproduce:

llc -code-model=large -mtriple=riscv32 -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -code-model=large -mtriple=riscv32 -verify-machineinstrs -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: cannot select: %13:gpr(p0) = G_CONSTANT_POOL %const.0 (in function: caller_indirect_args)
warning: Instruction selection used fallback path for caller_indirect_args

Occurrences (1):

Input	Function	Config
tail-calls.ll	caller_indirect_args	`-code-model=large -mtriple=riscv32 -verify-machineinstrs`

Generated 2026-10-15 08:05 UTC.