fallback: legalize: G_FSINCOS s64
| Run: | explore-04ca53e65f-20261014-114124 |
| Kind: | fallback |
| Category: | legalize: G_FSINCOS s64 |
| Occurrences: | 4 in 2 configs, 1 test files |
| Snippet from: | llvm.sincos.ll @test_sincos_f64 via llvm-extract |
| Config: | -mtriple=riscv32-linux-gnu -mattr=+d |
| Local check: | reproduces at 04ca53e65f |
| Compiler Explorer: | not uploaded (over --godbolt-limit or disabled) |
Snippet:
; Function Attrs: nounwind
define { double, double } @test_sincos_f64(double %a) #0 {
%result = call { double, double } @llvm.sincos.f64(double %a)
ret { double, double } %result
}
; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare { double, double } @llvm.sincos.f64(double) #1
attributes #0 = { nounwind }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
Reproduce:
llc -mtriple=riscv32-linux-gnu -mattr=+d -global-isel -global-isel-abort=2 -pass-remarks-missed=gisel.* snippet.ll -o -
llc -mtriple=riscv32-linux-gnu -mattr=+d -global-isel=0 snippet.ll -o -
Local llc output:
remark: <unknown>:0:0: unable to legalize instruction: %1:_(s64), %2:_ = G_FSINCOS %0:_ (in function: test_sincos_f64)
warning: Instruction selection used fallback path for test_sincos_f64
Occurrences (4):
| Input | Function | Config |
|---|
| llvm.sincos.ll | test_sincos_f64 | -mtriple=riscv32-linux-gnu -mattr=+d |
| llvm.sincos.ll | test_sincos_f64 | -mtriple=riscv64-linux-gnu -mattr=+d |
| llvm.sincos.83cb64815b.ll (mutant of llvm.sincos.ll) | test_sincos_f64 | -mtriple=riscv64-linux-gnu -mattr=+d |
| llvm.sincos.a2ffd05dc1.ll (mutant of llvm.sincos.ll) | test_sincos_f64 | -mtriple=riscv32-linux-gnu -mattr=+d |
Generated 2026-10-15 08:05 UTC.