| ; 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(...) |