fallback: legalize: G_FPEXT <8 x s64>,<8 x s16>
| Run: | main-04ca53e65f-20261014-105623 |
| Kind: | fallback |
| Category: | legalize: G_FPEXT <8 x s64>,<8 x s16> |
| Occurrences: | 5 in 1 configs, 1 test files |
| Snippet from: | pr63816.ll @test via llvm-extract |
| Config: | -mtriple=riscv64 -mattr=+d |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind
define void @test(ptr %0, ptr %1) #0 {
%V1 = load <8 x half>, ptr %0, align 16
%V2 = fpext <8 x half> %V1 to <8 x double>
store <8 x double> %V2, ptr %1, align 64
ret void
}
attributes #0 = { nounwind }
Reproduce:
llc -mtriple=riscv64 -mattr=+d -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv64 -mattr=+d -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %3:_(<8 x s64>) = G_FPEXT %2:_(<8 x s16>) (in function: test)
warning: Instruction selection used fallback path for test
Occurrences (5):
| Input | Function | Config |
|---|
| pr63816.ll | test | -mtriple=riscv64 -mattr=+d |
| pr63816.1543dcd448.ll (mutant of pr63816.ll) | test | -mtriple=riscv64 -mattr=+d |
| pr63816.5b47dcc276.ll (mutant of pr63816.ll) | test | -mtriple=riscv64 -mattr=+d |
| pr63816.cd7312f607.ll (mutant of pr63816.ll) | test | -mtriple=riscv64 -mattr=+d |
| pr63816.f88eb2c968.ll (mutant of pr63816.ll) | test | -mtriple=riscv64 -mattr=+d |
Generated 2026-10-15 08:05 UTC.