fallback: legalize: G

fallback: legalize: G_FMAXIMUM s32

Run:	explore-bc8218b282-20261015-075519
Kind:	fallback
Category:	legalize: G_FMAXIMUM s32
Occurrences:	48 in 8 configs, 1 test files
Snippet from:	float-maximum-minimum.ll @fmaximum_f32 via llvm-extract
Config:	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
Local check:	reproduces at bc8218b282
Compiler Explorer:	not uploaded (over --godbolt-limit or disabled)

Snippet:

; Function Attrs: nounwind
define float @fmaximum_f32(float %a, float %b) #0 {
  %1 = call float @llvm.maximum.f32(float %a, float %b)
  ret float %1
}

; Function Attrs: nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.maximum.f32(float, float) #1

attributes #0 = { nounwind }
attributes #1 = { nocallback nocreateundeforpoison nofree nosync nounwind speculatable willreturn memory(none) }

Reproduce:

llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %2:_(s32) = G_FMAXIMUM %0:_, %1:_ (in function: fmaximum_f32)
warning: Instruction selection used fallback path for fmaximum_f32

Occurrences (48):

Input	Function	Config
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.ll	fmaximum_f32	`-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.ll	fmaximum_nnan_f32	`-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.ll	fmaximum_nnan_op_f32	`-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.053e23a777.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.25dcad4e71.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.27ead41479.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f`
float-maximum-minimum.33903369d8.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.4a530b3e10.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.51f8e426a8.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d`
float-maximum-minimum.69ce2e61a2.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.7a255cd7a5.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.804babf813.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.880f9071b2.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.94f1087e38.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.9b1ae2a16f.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.a5733d48a9.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.a7d1257e69.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d`
float-maximum-minimum.a8fe114a62.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f`
float-maximum-minimum.aff438a5de.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.b383b1a900.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d`
float-maximum-minimum.bf899066b3.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.cb30503ada.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f`
float-maximum-minimum.d2cba4f49e.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64`
float-maximum-minimum.e1084ee49a.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.f20b170190.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f`
float-maximum-minimum.f305e98d8a.ll (mutant of float-maximum-minimum.ll)	fmaximum_f32	`-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32`
float-maximum-minimum.f33d09a563.ll (mutant of float-maximum-minimum.ll)	fmaximum_nnan_op_f32	`-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32`

Generated 2026-10-15 08:05 UTC.