; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s -check-prefix=X32 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s -check-prefix=X64 ; It's not necessary to zero-extend the arg because it is specified 'zeroext'. define void @bar1(i1 zeroext %v1) nounwind ssp { ; X32-LABEL: bar1: ; X32: # %bb.0: ; X32-NEXT: movzbl {{[0-9]+}}(%esp), %eax ; X32-NEXT: pushl %eax ; X32-NEXT: calll foo1 ; X32-NEXT: addl $4, %esp ; X32-NEXT: retl ; ; X64-LABEL: bar1: ; X64: # %bb.0: ; X64-NEXT: xorl %eax, %eax ; X64-NEXT: jmp foo1 # TAILCALL %conv = zext i1 %v1 to i32 %call = tail call i32 (...) @foo1(i32 %conv) nounwind ret void } ; Check that on x86-64 the arguments are simply forwarded. define void @bar2(i8 zeroext %v1) nounwind ssp { ; X32-LABEL: bar2: ; X32: # %bb.0: ; X32-NEXT: movzbl {{[0-9]+}}(%esp), %eax ; X32-NEXT: pushl %eax ; X32-NEXT: calll foo1 ; X32-NEXT: addl $4, %esp ; X32-NEXT: retl ; ; X64-LABEL: bar2: ; X64: # %bb.0: ; X64-NEXT: xorl %eax, %eax ; X64-NEXT: jmp foo1 # TAILCALL %conv = zext i8 %v1 to i32 %call = tail call i32 (...) @foo1(i32 %conv) nounwind ret void } ; Check that i1 return values are not zero-extended. define zeroext i1 @bar3() nounwind ssp { ; X32-LABEL: bar3: ; X32: # %bb.0: ; X32-NEXT: calll foo2@PLT ; X32-NEXT: retl ; ; X64-LABEL: bar3: ; X64: # %bb.0: ; X64-NEXT: pushq %rax ; X64-NEXT: callq foo2@PLT ; X64-NEXT: popq %rcx ; X64-NEXT: retq %call = call i1 @foo2() nounwind ret i1 %call } declare dso_local i32 @foo1(...) declare zeroext i1 @foo2()