9ff2eb1ea5
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.
9 lines
318 B
LLVM
9 lines
318 B
LLVM
; RUN: not --crash llc -mtriple=x86_64-linux-gnu %s -o - 2>&1 | FileCheck %s
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; CHECK: LLVM ERROR: failed to perform tail call elimination on a call site marked musttail
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declare tailcc [16 x i64] @callee()
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define tailcc [16 x i64] @caller() {
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%res = musttail call tailcc [16 x i64] @callee()
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ret [16 x i64] %res
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}
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