fallback: legalize: G_ZEXTLOAD s256,p0,s128
| Run: | explore-04ca53e65f-20261014-114124 |
| Kind: | fallback |
| Category: | legalize: G_ZEXTLOAD s256,p0,s128 |
| Occurrences: | 14 in 3 configs, 3 test files |
| Snippet from: | bitint-fp-conv-200.ll @test_bitint_200_add via llvm-extract |
| Config: | -mtriple=riscv64 -verify-machineinstrs |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind
define void @test_bitint_200_add(ptr %a, ptr %b, ptr %out) #0 {
%1 = load i200, ptr %a, align 8
%2 = load i200, ptr %b, align 8
%3 = add i200 %1, %2
store i200 %3, ptr %out, align 8
ret void
}
attributes #0 = { nounwind }
Reproduce:
llc -mtriple=riscv64 -verify-machineinstrs -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -verify-machineinstrs -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %75:_(s256) = G_ZEXTLOAD %1:_(p0) :: (load (s128) from %ir.b, align 8) (in function: test_bitint_200_add)
warning: Instruction selection used fallback path for test_bitint_200_add
Occurrences (14):
| Input | Function | Config |
|---|
| abdu-neg.ll | abd_ext_i128 | -mtriple=riscv32 |
| abdu-neg.ll | abd_ext_i128_undef | -mtriple=riscv32 |
| abdu-neg.ll | abd_ext_i128 | -mtriple=riscv32 -mattr=+zbb |
| abdu-neg.ll | abd_ext_i128_undef | -mtriple=riscv32 -mattr=+zbb |
| abdu.ll | abd_ext_i128 | -mtriple=riscv32 |
| abdu.ll | abd_ext_i128_undef | -mtriple=riscv32 |
| abdu.ll | abd_ext_i128 | -mtriple=riscv32 -mattr=+zbb |
| abdu.ll | abd_ext_i128_undef | -mtriple=riscv32 -mattr=+zbb |
| bitint-fp-conv-200.ll | test_bitint_200_add | -mtriple=riscv64 -verify-machineinstrs |
| abdu-neg.6d3f77721b.ll (mutant of abdu-neg.ll) | abd_ext_i128_undef | -mtriple=riscv32 |
| abdu-neg.dbb3d93f44.ll (mutant of abdu-neg.ll) | abd_ext_i128_undef | -mtriple=riscv32 -mattr=+zbb |
| bitint-fp-conv-200.08f6579f91.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_add | -mtriple=riscv64 -verify-machineinstrs |
| bitint-fp-conv-200.4ebb90dbc7.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_add | -mtriple=riscv64 -verify-machineinstrs |
| bitint-fp-conv-200.d679fa0511.ll (mutant of bitint-fp-conv-200.ll) | test_bitint_200_add | -mtriple=riscv64 -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.