diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/mul-constant-i16.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/mul-constant-i16.ll | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/mul-constant-i16.ll b/llvm/test/CodeGen/X86/mul-constant-i16.ll index 737bcc7c864..cf367ecbb98 100644 --- a/llvm/test/CodeGen/X86/mul-constant-i16.ll +++ b/llvm/test/CodeGen/X86/mul-constant-i16.ll @@ -766,6 +766,50 @@ define i16 @test_mul_by_520(i16 %x) { ret i16 %mul } +define i16 @test_mul_by_neg10(i16 %x) { +; X86-LABEL: test_mul_by_neg10: +; X86: # %bb.0: +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: addl %eax, %eax +; X86-NEXT: leal (%eax,%eax,4), %eax +; X86-NEXT: negl %eax +; X86-NEXT: # kill: def $ax killed $ax killed $eax +; X86-NEXT: retl +; +; X64-LABEL: test_mul_by_neg10: +; X64: # %bb.0: +; X64-NEXT: # kill: def $edi killed $edi def $rdi +; X64-NEXT: addl %edi, %edi +; X64-NEXT: leal (%rdi,%rdi,4), %eax +; X64-NEXT: negl %eax +; X64-NEXT: # kill: def $ax killed $ax killed $eax +; X64-NEXT: retq + %mul = mul nsw i16 %x, -10 + ret i16 %mul +} + +define i16 @test_mul_by_neg36(i16 %x) { +; X86-LABEL: test_mul_by_neg36: +; X86: # %bb.0: +; X86-NEXT: movl {{[0-9]+}}(%esp), %eax +; X86-NEXT: shll $2, %eax +; X86-NEXT: leal (%eax,%eax,8), %eax +; X86-NEXT: negl %eax +; X86-NEXT: # kill: def $ax killed $ax killed $eax +; X86-NEXT: retl +; +; X64-LABEL: test_mul_by_neg36: +; X64: # %bb.0: +; X64-NEXT: # kill: def $edi killed $edi def $rdi +; X64-NEXT: shll $2, %edi +; X64-NEXT: leal (%rdi,%rdi,8), %eax +; X64-NEXT: negl %eax +; X64-NEXT: # kill: def $ax killed $ax killed $eax +; X64-NEXT: retq + %mul = mul nsw i16 %x, -36 + ret i16 %mul +} + ; (x*9+42)*(x*5+2) define i16 @test_mul_spec(i16 %x) nounwind { ; X86-LABEL: test_mul_spec: |
