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859ff3505c
SwiftTailCC has a different set of requirements than the C calling convention for a tail call. The exact argument sequence doesn't have to match, but fewer ABI-affecting attributes are allowed. Also make sure the musttail diagnostic triggers if a musttail call isn't actually a tail call.
73 lines
2.2 KiB
LLVM
73 lines
2.2 KiB
LLVM
; RUN: not opt -verify %s 2>&1 | FileCheck %s
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declare swifttailcc void @simple()
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define swifttailcc void @inreg(i8* inreg) {
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; CHECK: inreg attribute not allowed in swifttailcc musttail caller
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musttail call swifttailcc void @simple()
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ret void
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}
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define swifttailcc void @inalloca(i8* inalloca(i8)) {
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; CHECK: inalloca attribute not allowed in swifttailcc musttail caller
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musttail call swifttailcc void @simple()
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ret void
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}
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define swifttailcc void @swifterror(i8** swifterror) {
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; CHECK: swifterror attribute not allowed in swifttailcc musttail caller
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musttail call swifttailcc void @simple()
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ret void
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}
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define swifttailcc void @preallocated(i8* preallocated(i8)) {
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; CHECK: preallocated attribute not allowed in swifttailcc musttail caller
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musttail call swifttailcc void @simple()
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ret void
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}
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define swifttailcc void @byref(i8* byref(i8)) {
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; CHECK: byref attribute not allowed in swifttailcc musttail caller
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musttail call swifttailcc void @simple()
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ret void
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}
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define swifttailcc void @call_inreg() {
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; CHECK: inreg attribute not allowed in swifttailcc musttail callee
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musttail call swifttailcc void @inreg(i8* inreg undef)
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ret void
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}
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define swifttailcc void @call_inalloca() {
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; CHECK: inalloca attribute not allowed in swifttailcc musttail callee
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musttail call swifttailcc void @inalloca(i8* inalloca(i8) undef)
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ret void
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}
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define swifttailcc void @call_swifterror() {
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; CHECK: swifterror attribute not allowed in swifttailcc musttail callee
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%err = alloca swifterror i8*
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musttail call swifttailcc void @swifterror(i8** swifterror %err)
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ret void
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}
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define swifttailcc void @call_preallocated() {
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; CHECK: preallocated attribute not allowed in swifttailcc musttail callee
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musttail call swifttailcc void @preallocated(i8* preallocated(i8) undef)
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ret void
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}
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define swifttailcc void @call_byref() {
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; CHECK: byref attribute not allowed in swifttailcc musttail callee
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musttail call swifttailcc void @byref(i8* byref(i8) undef)
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ret void
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}
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declare swifttailcc void @varargs(...)
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define swifttailcc void @call_varargs(...) {
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; CHECK: cannot guarantee swifttailcc tail call for varargs function
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musttail call swifttailcc void(...) @varargs(...)
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ret void
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}
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