fallback: legalize: G_ADD <4 x s32>

Run:main-04ca53e65f-20261014-105623
Kind:fallback
Category:legalize: G_ADD <4 x s32>
Occurrences:17 in 14 configs, 5 test files
Snippet from:calling-conv-p-ext-vector.ll @test_cc_v4i32 via llvm-extract
Config:-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
Local check:reproduces at 04ca53e65f
Compiler Explorer:not uploaded (over --godbolt-limit or disabled)

Snippet:

define <4 x i32> @test_cc_v4i32(<4 x i32> %a, <4 x i32> %b) {
  %res = add <4 x i32> %a, %b
  ret <4 x i32> %res
}

Reproduce:

llc -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs -global-isel=0 snippet.ll -o -

Local llc output:

remark: <unknown>:0:0: unable to legalize instruction: %6:_(<4 x s32>) = G_ADD %0:_, %1:_ (in function: test_cc_v4i32)
warning: Instruction selection used fallback path for test_cc_v4i32

Occurrences (17):

InputFunctionConfig
calling-conv-p-ext-vector.lltest_cc_v4i32-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
atomic-signext.3320560960.ll (mutant of atomic-signext.ll)cmpxchg_i32_monotonic_crossbb-mtriple=riscv64 -verify-machineinstrs
atomic-signext.83d32c5253.ll (mutant of atomic-signext.ll)cmpxchg_i32_monotonic_crossbb-mtriple=riscv64 -mattr=+a,+zacas -verify-machineinstrs
atomic-signext.9cb55c4a33.ll (mutant of atomic-signext.ll)cmpxchg_i32_monotonic_crossbb-mtriple=riscv32 -mattr=+a -verify-machineinstrs
atomic-signext.b702c6ed13.ll (mutant of atomic-signext.ll)cmpxchg_i32_monotonic_crossbb-mtriple=riscv32 -mattr=+a,+zacas -verify-machineinstrs
atomic-signext.e1f1f712b0.ll (mutant of atomic-signext.ll)cmpxchg_i32_monotonic_crossbb-mtriple=riscv32 -verify-machineinstrs
atomic-signext.fac9831b16.ll (mutant of atomic-signext.ll)cmpxchg_i32_monotonic_crossbb-mtriple=riscv64 -mattr=+a -verify-machineinstrs
calling-conv-p-ext-vector.7e19787614.ll (mutant of calling-conv-p-ext-vector.ll)test_cc_v4i32-mtriple=riscv32 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
calling-conv-p-ext-vector.9901ec5358.ll (mutant of calling-conv-p-ext-vector.ll)test_cc_v4i32-mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs
nontemporal-scalable.a96cdf7d2a.ll (mutant of nontemporal-scalable.ll)test_nontemporal_P1_store_nxv2i64-mtriple=riscv64 -mattr=+zihintntl,+f,+d,+zfh,+v
nontemporal-scalable.f59e10defe.ll (mutant of nontemporal-scalable.ll)test_nontemporal_P1_store_nxv2i64-mtriple=riscv32 -mattr=+zihintntl,+f,+d,+zfh,+v
rv32zbs.6a23e393a1.ll (mutant of rv32zbs.ll)bext_i32-mtriple=riscv32 -verify-machineinstrs
rv32zbs.98df11708d.ll (mutant of rv32zbs.ll)bext_i32-mtriple=riscv32 -mattr=+zbs -verify-machineinstrs
rv32zbs.f89bfd56d9.ll (mutant of rv32zbs.ll)bext_i32-mtriple=riscv32 -mattr=+zbs,+zbb -verify-machineinstrs
rv64zbb-zbkb.970ff3f161.ll (mutant of rv64zbb-zbkb.ll)rol_i32-mtriple=riscv64 -verify-machineinstrs
rv64zbb-zbkb.dd31027786.ll (mutant of rv64zbb-zbkb.ll)rol_i32-mtriple=riscv64 -mattr=+zbb -verify-machineinstrs
rv64zbb-zbkb.f17d65deb0.ll (mutant of rv64zbb-zbkb.ll)rol_i32-mtriple=riscv64 -mattr=+zbkb -verify-machineinstrs

Generated 2026-10-15 08:05 UTC.