fallback: legalize: G_FMAXIMUM s32

Run:main-04ca53e65f-20261014-105623
Kind:fallback
Category:legalize: G_FMAXIMUM s32
Occurrences:32 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 04ca53e65f
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 (32):

InputFunctionConfig
float-maximum-minimum.llfmaximum_f32-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.llfmaximum_f32-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.llfmaximum_f32-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.llfmaximum_f32-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.llfmaximum_f32-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d
float-maximum-minimum.llfmaximum_f32-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f
float-maximum-minimum.llfmaximum_f32-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.llfmaximum_f32-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.llfmaximum_nnan_f32-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.llfmaximum_nnan_op_f32-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.033127f980.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv64 -mattr=+d -verify-machineinstrs -target-abi=lp64d
float-maximum-minimum.16fba3d740.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv64 -mattr=+f -verify-machineinstrs -target-abi=lp64f
float-maximum-minimum.5b5e480ed7.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv32 -mattr=+f -verify-machineinstrs -target-abi=ilp32f
float-maximum-minimum.632f2db982.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv32 -mattr=+zfinx -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.8cea1c7a4e.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv32 -verify-machineinstrs -target-abi=ilp32
float-maximum-minimum.92e40c5a04.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv64 -mattr=+zfinx -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.d9e0623c2c.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv64 -verify-machineinstrs -target-abi=lp64
float-maximum-minimum.e5618a5154.ll (mutant of float-maximum-minimum.ll)fmaximum_nnan_f32-mtriple=riscv32 -mattr=+d -verify-machineinstrs -target-abi=ilp32f

Generated 2026-10-15 08:05 UTC.