diff options
| author | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2019-04-05 20:18:25 +0000 |
|---|---|---|
| committer | Francis Visoiu Mistrih <francisvm@yahoo.com> | 2019-04-05 20:18:25 +0000 |
| commit | 9d9d1b6b2ba079c83bad5a00c8189b86ef14ae03 (patch) | |
| tree | 8b2f16f32fbbca72c7bbd7c05eb4fc5ec59173a3 | |
| parent | ab051a378c9c84314c3b613cc37d9c424036d481 (diff) | |
| download | bcm5719-llvm-9d9d1b6b2ba079c83bad5a00c8189b86ef14ae03.tar.gz bcm5719-llvm-9d9d1b6b2ba079c83bad5a00c8189b86ef14ae03.zip | |
[X86] Enable tail calls for CallingConv::Swift
It's currently only enabled on AArch64 (enabled in r281376).
llvm-svn: 357809
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 2 | ||||
| -rw-r--r-- | llvm/test/CodeGen/X86/swiftcc.ll | 18 |
2 files changed, 16 insertions, 4 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 6ad615a94e9..0e0d07b349f 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -2941,6 +2941,8 @@ static bool mayTailCallThisCC(CallingConv::ID CC) { case CallingConv::X86_StdCall: case CallingConv::X86_VectorCall: case CallingConv::X86_FastCall: + // Swift: + case CallingConv::Swift: return true; default: return canGuaranteeTCO(CC); diff --git a/llvm/test/CodeGen/X86/swiftcc.ll b/llvm/test/CodeGen/X86/swiftcc.ll index dc36ee247f1..2e71307fe76 100644 --- a/llvm/test/CodeGen/X86/swiftcc.ll +++ b/llvm/test/CodeGen/X86/swiftcc.ll @@ -1,11 +1,21 @@ -; RUN: llc -mtriple x86_64-unknown-windows-msvc -filetype asm -o - %s | FileCheck %s +; 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 define swiftcc void @f() { %1 = alloca i8 ret void } -; CHECK-LABEL: f -; CHECK: .seh_stackalloc 8 -; CHECK: .seh_endprologue +; MSVC-LABEL: f +; MSVC: .seh_stackalloc 8 +; MSVC: .seh_endprologue +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 |
