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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
define i32 @shl48sar47(i64 %a) #0 {
; CHECK-LABEL: shl48sar47:
; CHECK: # %bb.0:
; CHECK-NEXT: movswq %di, %rax
; CHECK-NEXT: addl %eax, %eax
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
%1 = shl i64 %a, 48
%2 = ashr exact i64 %1, 47
%3 = trunc i64 %2 to i32
ret i32 %3
}
define i32 @shl48sar49(i64 %a) #0 {
; CHECK-LABEL: shl48sar49:
; CHECK: # %bb.0:
; CHECK-NEXT: movswq %di, %rax
; CHECK-NEXT: shrq %rax
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
%1 = shl i64 %a, 48
%2 = ashr exact i64 %1, 49
%3 = trunc i64 %2 to i32
ret i32 %3
}
define i32 @shl56sar55(i64 %a) #0 {
; CHECK-LABEL: shl56sar55:
; CHECK: # %bb.0:
; CHECK-NEXT: movsbq %dil, %rax
; CHECK-NEXT: addl %eax, %eax
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
%1 = shl i64 %a, 56
%2 = ashr exact i64 %1, 55
%3 = trunc i64 %2 to i32
ret i32 %3
}
define i32 @shl56sar57(i64 %a) #0 {
; CHECK-LABEL: shl56sar57:
; CHECK: # %bb.0:
; CHECK-NEXT: movsbq %dil, %rax
; CHECK-NEXT: shrq %rax
; CHECK-NEXT: # kill: def $eax killed $eax killed $rax
; CHECK-NEXT: retq
%1 = shl i64 %a, 56
%2 = ashr exact i64 %1, 57
%3 = trunc i64 %2 to i32
ret i32 %3
}
define i8 @all_sign_bit_ashr(i8 %x) {
; CHECK-LABEL: all_sign_bit_ashr:
; CHECK: # %bb.0:
; CHECK-NEXT: andb $1, %dil
; CHECK-NEXT: negb %dil
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: retq
%and = and i8 %x, 1
%neg = sub i8 0, %and
%sar = ashr i8 %neg, 6
ret i8 %sar
}
define <4 x i32> @all_sign_bit_ashr_vec(<4 x i32> %x) {
; CHECK-LABEL: all_sign_bit_ashr_vec:
; CHECK: # %bb.0:
; CHECK-NEXT: pand {{.*}}(%rip), %xmm0
; CHECK-NEXT: pxor %xmm1, %xmm1
; CHECK-NEXT: psubd %xmm0, %xmm1
; CHECK-NEXT: movdqa %xmm1, %xmm0
; CHECK-NEXT: retq
%and = and <4 x i32> %x, <i32 1, i32 1, i32 1 , i32 1>
%neg = sub <4 x i32> zeroinitializer, %and
%sar = ashr <4 x i32> %neg, <i32 1, i32 31, i32 5, i32 0>
ret <4 x i32> %sar
}
attributes #0 = { nounwind }
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