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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py2; RUN: llc -mtriple=x86_64-- < %s | FileCheck %s3; These sequences don't need neg instructions; they can be done with4; a single shift and sub each.5 6define i64 @foo(i64 %x, i64 %y, i64 %n) nounwind {7; CHECK-LABEL: foo:8; CHECK: # %bb.0:9; CHECK-NEXT: movq %rdx, %rcx10; CHECK-NEXT: movq %rdi, %rax11; CHECK-NEXT: # kill: def $cl killed $cl killed $rcx12; CHECK-NEXT: shlq %cl, %rsi13; CHECK-NEXT: subq %rsi, %rax14; CHECK-NEXT: retq15 %a = sub i64 0, %y16 %b = shl i64 %a, %n17 %c = add i64 %b, %x18 ret i64 %c19}20define i64 @boo(i64 %x, i64 %y, i64 %n) nounwind {21; CHECK-LABEL: boo:22; CHECK: # %bb.0:23; CHECK-NEXT: movq %rdx, %rcx24; CHECK-NEXT: movq %rdi, %rax25; CHECK-NEXT: # kill: def $cl killed $cl killed $rcx26; CHECK-NEXT: shlq %cl, %rsi27; CHECK-NEXT: subq %rsi, %rax28; CHECK-NEXT: retq29 %a = sub i64 0, %y30 %b = shl i64 %a, %n31 %c = add i64 %x, %b32 ret i64 %c33}34