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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; Check that 64-bit division is bypassed correctly.
; RUN: llc < %s -mattr=+idivq-to-divl -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
; Additional tests for 64-bit divide bypass
define i64 @Test_get_quotient(i64 %a, i64 %b) nounwind {
; CHECK-LABEL: Test_get_quotient:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: orq %rsi, %rax
; CHECK-NEXT: shrq $32, %rax
; CHECK-NEXT: je .LBB0_1
; CHECK-NEXT: # %bb.2:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: cqto
; CHECK-NEXT: idivq %rsi
; CHECK-NEXT: retq
; CHECK-NEXT: .LBB0_1:
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: divl %esi
; CHECK-NEXT: # kill: def $eax killed $eax def $rax
; CHECK-NEXT: retq
%result = sdiv i64 %a, %b
ret i64 %result
}
define i64 @Test_get_remainder(i64 %a, i64 %b) nounwind {
; CHECK-LABEL: Test_get_remainder:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: orq %rsi, %rax
; CHECK-NEXT: shrq $32, %rax
; CHECK-NEXT: je .LBB1_1
; CHECK-NEXT: # %bb.2:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: cqto
; CHECK-NEXT: idivq %rsi
; CHECK-NEXT: movq %rdx, %rax
; CHECK-NEXT: retq
; CHECK-NEXT: .LBB1_1:
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: divl %esi
; CHECK-NEXT: # kill: def $edx killed $edx def $rdx
; CHECK-NEXT: movq %rdx, %rax
; CHECK-NEXT: retq
%result = srem i64 %a, %b
ret i64 %result
}
define i64 @Test_get_quotient_and_remainder(i64 %a, i64 %b) nounwind {
; CHECK-LABEL: Test_get_quotient_and_remainder:
; CHECK: # %bb.0:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: orq %rsi, %rax
; CHECK-NEXT: shrq $32, %rax
; CHECK-NEXT: je .LBB2_1
; CHECK-NEXT: # %bb.2:
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: cqto
; CHECK-NEXT: idivq %rsi
; CHECK-NEXT: addq %rdx, %rax
; CHECK-NEXT: retq
; CHECK-NEXT: .LBB2_1:
; CHECK-NEXT: xorl %edx, %edx
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: divl %esi
; CHECK-NEXT: # kill: def $edx killed $edx def $rdx
; CHECK-NEXT: # kill: def $eax killed $eax def $rax
; CHECK-NEXT: addq %rdx, %rax
; CHECK-NEXT: retq
%resultdiv = sdiv i64 %a, %b
%resultrem = srem i64 %a, %b
%result = add i64 %resultdiv, %resultrem
ret i64 %result
}
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