1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -verify-machineinstrs -mtriple=powerpc -mcpu=pwr7 < %s | FileCheck %s 3 4; This piece of IR is expanded from memcmp. 5define i1 @cmp(ptr %a, ptr %b) { 6; CHECK-LABEL: cmp: 7; CHECK: # %bb.0: # %entry 8; CHECK-NEXT: lwz 5, 4(3) 9; CHECK-NEXT: lwz 7, 0(3) 10; CHECK-NEXT: lwz 6, 4(4) 11; CHECK-NEXT: lwz 8, 0(4) 12; CHECK-NEXT: xor 9, 7, 8 13; CHECK-NEXT: xor 10, 5, 6 14; CHECK-NEXT: or. 9, 10, 9 15; CHECK-NEXT: bne 0, .LBB0_2 16; CHECK-NEXT: # %bb.1: # %loadbb1 17; CHECK-NEXT: lbz 3, 8(3) 18; CHECK-NEXT: lbz 4, 8(4) 19; CHECK-NEXT: sub 3, 3, 4 20; CHECK-NEXT: srwi 3, 3, 31 21; CHECK-NEXT: blr 22; CHECK-NEXT: .LBB0_2: # %res_block 23; CHECK-NEXT: cmplw 7, 8 24; CHECK-NEXT: cmplw 1, 5, 6 25; CHECK-NEXT: li 3, 1 26; CHECK-NEXT: li 4, -1 27; CHECK-NEXT: crandc 20, 0, 2 28; CHECK-NEXT: crand 21, 2, 4 29; CHECK-NEXT: cror 20, 21, 20 30; CHECK-NEXT: isel 3, 4, 3, 20 31; CHECK-NEXT: srwi 3, 3, 31 32; CHECK-NEXT: blr 33entry: 34 br label %loadbb 35 36res_block: 37 %0 = icmp ult i64 %4, %5 38 %1 = select i1 %0, i32 -1, i32 1 39 br label %endblock 40 41loadbb: 42 %2 = bitcast ptr %a to ptr 43 %3 = bitcast ptr %b to ptr 44 %4 = load i64, ptr %2, align 1 45 %5 = load i64, ptr %3, align 1 46 %6 = icmp eq i64 %4, %5 47 br i1 %6, label %loadbb1, label %res_block 48 49loadbb1: 50 %7 = getelementptr i8, ptr %a, i64 8 51 %8 = getelementptr i8, ptr %b, i64 8 52 %9 = load i8, ptr %7, align 1 53 %10 = load i8, ptr %8, align 1 54 %11 = zext i8 %9 to i32 55 %12 = zext i8 %10 to i32 56 %13 = sub i32 %11, %12 57 br label %endblock 58 59endblock: 60 %phi.res = phi i32 [ %13, %loadbb1 ], [ %1, %res_block ] 61 %icmp = icmp slt i32 %phi.res, 0 62 ret i1 %icmp 63} 64