1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=i686-unknown | FileCheck %s --check-prefix=X86 3; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=X64 4 5; Use movzbl to avoid partial-register updates. 6 7define i32 @foo(i32 %p, i8 zeroext %x) nounwind { 8; X86-LABEL: foo: 9; X86: # %bb.0: 10; X86-NEXT: movzbl {{[0-9]+}}(%esp), %eax 11; X86-NEXT: divb {{[0-9]+}}(%esp) 12; X86-NEXT: movzbl %al, %eax 13; X86-NEXT: andl $1, %eax 14; X86-NEXT: retl 15; 16; X64-LABEL: foo: 17; X64: # %bb.0: 18; X64-NEXT: movzbl %dil, %eax 19; X64-NEXT: divb %sil 20; X64-NEXT: movzbl %al, %eax 21; X64-NEXT: andl $1, %eax 22; X64-NEXT: retq 23 %q = trunc i32 %p to i8 24 %r = udiv i8 %q, %x 25 %s = zext i8 %r to i32 26 %t = and i32 %s, 1 27 ret i32 %t 28} 29 30define i32 @bar(i32 %p, i16 zeroext %x) nounwind { 31; X86-LABEL: bar: 32; X86: # %bb.0: 33; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax 34; X86-NEXT: xorl %edx, %edx 35; X86-NEXT: divw {{[0-9]+}}(%esp) 36; X86-NEXT: # kill: def $ax killed $ax def $eax 37; X86-NEXT: andl $1, %eax 38; X86-NEXT: retl 39; 40; X64-LABEL: bar: 41; X64: # %bb.0: 42; X64-NEXT: movl %edi, %eax 43; X64-NEXT: # kill: def $ax killed $ax killed $eax 44; X64-NEXT: xorl %edx, %edx 45; X64-NEXT: divw %si 46; X64-NEXT: # kill: def $ax killed $ax def $eax 47; X64-NEXT: andl $1, %eax 48; X64-NEXT: retq 49 %q = trunc i32 %p to i16 50 %r = udiv i16 %q, %x 51 %s = zext i16 %r to i32 52 %t = and i32 %s, 1 53 ret i32 %t 54} 55