1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; Check that 64-bit division is bypassed correctly. 3; RUN: llc < %s -mattr=+idivq-to-divl -mtriple=x86_64-unknown-linux-gnu | FileCheck %s 4 5; Additional tests for 64-bit divide bypass 6 7define i64 @Test_get_quotient(i64 %a, i64 %b) nounwind { 8; CHECK-LABEL: Test_get_quotient: 9; CHECK: # %bb.0: 10; CHECK-NEXT: movq %rdi, %rax 11; CHECK-NEXT: orq %rsi, %rax 12; CHECK-NEXT: shrq $32, %rax 13; CHECK-NEXT: je .LBB0_1 14; CHECK-NEXT: # %bb.2: 15; CHECK-NEXT: movq %rdi, %rax 16; CHECK-NEXT: cqto 17; CHECK-NEXT: idivq %rsi 18; CHECK-NEXT: retq 19; CHECK-NEXT: .LBB0_1: 20; CHECK-NEXT: xorl %edx, %edx 21; CHECK-NEXT: movl %edi, %eax 22; CHECK-NEXT: divl %esi 23; CHECK-NEXT: # kill: def $eax killed $eax def $rax 24; CHECK-NEXT: retq 25 %result = sdiv i64 %a, %b 26 ret i64 %result 27} 28 29define i64 @Test_get_remainder(i64 %a, i64 %b) nounwind { 30; CHECK-LABEL: Test_get_remainder: 31; CHECK: # %bb.0: 32; CHECK-NEXT: movq %rdi, %rax 33; CHECK-NEXT: orq %rsi, %rax 34; CHECK-NEXT: shrq $32, %rax 35; CHECK-NEXT: je .LBB1_1 36; CHECK-NEXT: # %bb.2: 37; CHECK-NEXT: movq %rdi, %rax 38; CHECK-NEXT: cqto 39; CHECK-NEXT: idivq %rsi 40; CHECK-NEXT: movq %rdx, %rax 41; CHECK-NEXT: retq 42; CHECK-NEXT: .LBB1_1: 43; CHECK-NEXT: xorl %edx, %edx 44; CHECK-NEXT: movl %edi, %eax 45; CHECK-NEXT: divl %esi 46; CHECK-NEXT: # kill: def $edx killed $edx def $rdx 47; CHECK-NEXT: movq %rdx, %rax 48; CHECK-NEXT: retq 49 %result = srem i64 %a, %b 50 ret i64 %result 51} 52 53define i64 @Test_get_quotient_and_remainder(i64 %a, i64 %b) nounwind { 54; CHECK-LABEL: Test_get_quotient_and_remainder: 55; CHECK: # %bb.0: 56; CHECK-NEXT: movq %rdi, %rax 57; CHECK-NEXT: orq %rsi, %rax 58; CHECK-NEXT: shrq $32, %rax 59; CHECK-NEXT: je .LBB2_1 60; CHECK-NEXT: # %bb.2: 61; CHECK-NEXT: movq %rdi, %rax 62; CHECK-NEXT: cqto 63; CHECK-NEXT: idivq %rsi 64; CHECK-NEXT: addq %rdx, %rax 65; CHECK-NEXT: retq 66; CHECK-NEXT: .LBB2_1: 67; CHECK-NEXT: xorl %edx, %edx 68; CHECK-NEXT: movl %edi, %eax 69; CHECK-NEXT: divl %esi 70; CHECK-NEXT: # kill: def $edx killed $edx def $rdx 71; CHECK-NEXT: # kill: def $eax killed $eax def $rax 72; CHECK-NEXT: addq %rdx, %rax 73; CHECK-NEXT: retq 74 %resultdiv = sdiv i64 %a, %b 75 %resultrem = srem i64 %a, %b 76 %result = add i64 %resultdiv, %resultrem 77 ret i64 %result 78} 79