fallback: legalize: G_MUL <4 x s16>
| Run: | main-04ca53e65f-20261014-113325 |
| Kind: | fallback |
| Category: | legalize: G_MUL <4 x s16> |
| Occurrences: | 5 in 1 configs, 2 test files |
| Snippet from: | rvp-simd-64.ll @test_pmul_h 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 i16> @test_pmul_h(<4 x i16> %a, <4 x i16> %b) {
%res = mul <4 x i16> %a, %b
ret <4 x i16> %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: %2:_(<4 x s16>) = G_MUL %0:_, %1:_ (in function: test_pmul_h)
warning: Instruction selection used fallback path for test_pmul_h
Occurrences (5):
| Input | Function | Config |
|---|
| rvp-simd-32.ll | test_pwmul_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-32.ll | test_pwmulu_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-32.ll | test_pwmulsu_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-64.ll | test_pmul_h | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
| rvp-simd-32.4fad8d445a.ll (mutant of rvp-simd-32.ll) | test_pwmul_b | -mtriple=riscv64 -mattr=+experimental-p,+m,+zbb -verify-machineinstrs |
Generated 2026-10-15 08:05 UTC.