; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=i686-unknown-linux-gnu | FileCheck %s -check-prefix=X86 ; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s -check-prefix=X64 ; RUN: llc < %s -mtriple=x86_64-linux-gnux32 | FileCheck %s -check-prefix=X32 define zeroext i8 @foo() nounwind ssp { ; X86-LABEL: foo: ; X86: # %bb.0: # %entry ; X86-NEXT: subl $12, %esp ; X86-NEXT: calll bar ; X86-NEXT: movb %ah, %al ; X86-NEXT: addl $12, %esp ; X86-NEXT: retl ; ; X64-LABEL: foo: ; X64: # %bb.0: # %entry ; X64-NEXT: pushq %rax ; X64-NEXT: xorl %eax, %eax ; X64-NEXT: callq bar ; X64-NEXT: # kill: def $ax killed $ax def $eax ; X64-NEXT: shrl $8, %eax ; X64-NEXT: # kill: def $al killed $al killed $eax ; X64-NEXT: popq %rcx ; X64-NEXT: retq ; ; X32-LABEL: foo: ; X32: # %bb.0: # %entry ; X32-NEXT: pushq %rax ; X32-NEXT: xorl %eax, %eax ; X32-NEXT: callq bar ; X32-NEXT: # kill: def $ax killed $ax def $eax ; X32-NEXT: shrl $8, %eax ; X32-NEXT: # kill: def $al killed $al killed $eax ; X32-NEXT: popq %rcx ; X32-NEXT: retq entry: %0 = tail call zeroext i16 (...) @bar() nounwind %1 = lshr i16 %0, 8 %2 = trunc i16 %1 to i8 ret i8 %2 } declare zeroext i16 @bar(...)