1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64 3 4 define i32 @neg_lshr_signbit(i32 %x) { 5 ; X64-LABEL: neg_lshr_signbit: 6 ; X64: # %bb.0: 7 ; X64-NEXT: sarl $31, %edi 8 ; X64-NEXT: movl %edi, %eax 9 ; X64-NEXT: retq 10 %sh = lshr i32 %x, 31 11 %neg = sub i32 0, %sh 12 ret i32 %neg 13 } 14 15 define i64 @neg_ashr_signbit(i64 %x) { 16 ; X64-LABEL: neg_ashr_signbit: 17 ; X64: # %bb.0: 18 ; X64-NEXT: shrq $63, %rdi 19 ; X64-NEXT: movq %rdi, %rax 20 ; X64-NEXT: retq 21 %sh = ashr i64 %x, 63 22 %neg = sub i64 0, %sh 23 ret i64 %neg 24 } 25 26 define <4 x i32> @neg_ashr_signbit_vec(<4 x i32> %x) { 27 ; X64-LABEL: neg_ashr_signbit_vec: 28 ; X64: # %bb.0: 29 ; X64-NEXT: psrld $31, %xmm0 30 ; X64-NEXT: retq 31 %sh = ashr <4 x i32> %x, <i32 31, i32 31, i32 31, i32 31> 32 %neg = sub <4 x i32> zeroinitializer, %sh 33 ret <4 x i32> %neg 34 } 35 36 define <8 x i16> @neg_lshr_signbit_vec(<8 x i16> %x) { 37 ; X64-LABEL: neg_lshr_signbit_vec: 38 ; X64: # %bb.0: 39 ; X64-NEXT: psraw $15, %xmm0 40 ; X64-NEXT: retq 41 %sh = lshr <8 x i16> %x, <i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15, i16 15> 42 %neg = sub <8 x i16> zeroinitializer, %sh 43 ret <8 x i16> %neg 44 } 45 46
