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We also need to pass swifterror in R12 under swiftcc not only under ccc 

rdar://28190687

llvm-svn: 281138
This commit is contained in:
Arnold Schwaighofer 2016-09-10 14:16:55 +00:00
parent b66e5eb612
commit 112ff66505
2 changed files with 25 additions and 0 deletions
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3
llvm/lib/Target/X86/X86CallingConv.td
View File

@ -196,6 +196,9 @@ def RetCC_X86_64_WebKit_JS : CallingConv<[
]>;
def RetCC_X86_64_Swift : CallingConv<[
CCIfSwiftError<CCIfType<[i64], CCAssignToReg<[R12]>>>,
// For integers, ECX, R8D can be used as extra return registers.
CCIfType<[i1], CCPromoteToType<i8>>,
CCIfType<[i8] , CCAssignToReg<[AL, DL, CL, R8B]>>,

22
llvm/test/CodeGen/X86/swifterror.ll
View File

@ -376,3 +376,25 @@ entry:
ret void
}
; This tests the basic usage of a swifterror parameter with swiftcc.
define swiftcc float @foo_swiftcc(%swift_error** swifterror %error_ptr_ref) {
; CHECK-APPLE-LABEL: foo_swiftcc:
; CHECK-APPLE: movl $16, %edi
; CHECK-APPLE: malloc
; CHECK-APPLE: movb $1, 8(%rax)
; CHECK-APPLE: movq %rax, %r12
; CHECK-O0-LABEL: foo_swiftcc:
; CHECK-O0: movl $16
; CHECK-O0: malloc
; CHECK-O0: movb $1, 8(%rax)
; CHECK-O0: movq %{{.*}}, %r12
entry:
%call = call i8* @malloc(i64 16)
%call.0 = bitcast i8* %call to %swift_error*
store %swift_error* %call.0, %swift_error** %error_ptr_ref
%tmp = getelementptr inbounds i8, i8* %call, i64 8
store i8 1, i8* %tmp
ret float 1.0
}