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llvm-project/llvm/test/CodeGen/X86/swiftcc.ll

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[X86] Enable tail calls for CallingConv::Swift It's currently only enabled on AArch64 (enabled in r281376). llvm-svn: 357809
2019-04-06 04:18:25 +08:00
; RUN: llc -mtriple x86_64-- -filetype asm -o - %s | FileCheck %s
; RUN: llc -mtriple x86_64-unknown-windows-msvc -filetype asm -o - %s | FileCheck %s --check-prefix=MSVC
X86: treat SwiftCC as Win64_CC on Win64 The Swift CC is identical to Win64 CC with the exception of swift error being passed in r12 which is a CSR. However, since this calling convention is only used in swift -> swift code, it does not impact interoperability and can be treated entirely as Win64 CC. We would previously incorrectly lower the frame setup as we did not treat the frame as conforming to Win64 specifications. llvm-svn: 313813
2017-09-21 05:00:40 +08:00
define swiftcc void @f() {
%1 = alloca i8
ret void
}
[X86] Enable tail calls for CallingConv::Swift It's currently only enabled on AArch64 (enabled in r281376). llvm-svn: 357809
2019-04-06 04:18:25 +08:00
; MSVC-LABEL: f
; MSVC: .seh_stackalloc 8
; MSVC: .seh_endprologue
X86: treat SwiftCC as Win64_CC on Win64 The Swift CC is identical to Win64 CC with the exception of swift error being passed in r12 which is a CSR. However, since this calling convention is only used in swift -> swift code, it does not impact interoperability and can be treated entirely as Win64 CC. We would previously incorrectly lower the frame setup as we did not treat the frame as conforming to Win64 specifications. llvm-svn: 313813
2017-09-21 05:00:40 +08:00
[X86] Enable tail calls for CallingConv::Swift It's currently only enabled on AArch64 (enabled in r281376). llvm-svn: 357809
2019-04-06 04:18:25 +08:00
declare swiftcc i64 @myFunc()
define swiftcc i64 @myFunc2() nounwind {
%r = tail call swiftcc i64 @myFunc()
ret i64 %r
}
; CHECK-LABEL: myFunc2
; CHECK: jmp myFunc
; CHECK-NOT: call