1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 3 4;; fold (sext (not x)) -> (add (zext x) -1) 5define i32 @sext_of_not(i1 %x) { 6; CHECK-LABEL: sext_of_not: 7; CHECK: # %bb.0: 8; CHECK-NEXT: nilf %r2, 1 9; CHECK-NEXT: ahi %r2, -1 10; CHECK-NEXT: br %r14 11 %xor = xor i1 %x, 1 12 %sext = sext i1 %xor to i32 13 ret i32 %sext 14} 15 16;; fold (sext (not (setcc a, b, cc))) -> (sext (setcc a, b, !cc)) 17define i32 @sext_of_not_cmp(i32 %x) { 18; CHECK-LABEL: sext_of_not_cmp: 19; CHECK: # %bb.0: 20; CHECK-NEXT: chi %r2, 7 21; CHECK-NEXT: ipm %r2 22; CHECK-NEXT: afi %r2, 1879048192 23; CHECK-NEXT: sra %r2, 31 24; CHECK-NEXT: br %r14 25 %cmp = icmp eq i32 %x, 7 26 %xor = xor i1 %cmp, 1 27 %sext = sext i1 %xor to i32 28 ret i32 %sext 29} 30 31;; fold (sext (not (setcc a, b, cc))) -> (sext (setcc a, b, !cc)) 32;; make sure we don't crash if the not gets replaced in-visit 33define i32 @sext_of_not_fsetccs(double %x) strictfp { 34; CHECK-LABEL: sext_of_not_fsetccs: 35; CHECK: # %bb.0: 36; CHECK-NEXT: ltdbr %f0, %f0 37; CHECK-NEXT: ipm %r0 38; CHECK-NEXT: afi %r0, 1879048192 39; CHECK-NEXT: srl %r0, 31 40; CHECK-NEXT: lcr %r2, %r0 41; CHECK-NEXT: br %r14 42 %cmp = call i1 @llvm.experimental.constrained.fcmp.f64(double %x, double 0.000000e+00, metadata !"oeq", metadata !"fpexcept.ignore") 43 %xor = xor i1 %cmp, 1 44 %sext = sext i1 %xor to i32 45 ret i32 %sext 46} 47 48declare i1 @llvm.experimental.constrained.fcmp.f64(double, double, metadata, metadata) 49 50;; TODO: fold (add (zext (setcc a, b, cc)), -1) -> (sext (setcc a, b, !cc)) 51define i32 @dec_of_zexted_cmp(i32 %x) { 52; CHECK-LABEL: dec_of_zexted_cmp: 53; CHECK: # %bb.0: 54; CHECK-NEXT: chi %r2, 7 55; CHECK-NEXT: ipm %r2 56; CHECK-NEXT: afi %r2, -268435456 57; CHECK-NEXT: srl %r2, 31 58; CHECK-NEXT: ahi %r2, -1 59; CHECK-NEXT: br %r14 60 %cmp = icmp eq i32 %x, 7 61 %zext = zext i1 %cmp to i32 62 %dec = sub i32 %zext, 1 63 ret i32 %dec 64} 65