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e5a81a130f
This prevents the emission of DAG-generated vreg definitions after a tail call be dropping them entirely (on the grounds that nothing could use them anyway, and they interfere with O0 CodeGen). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185754 91177308-0d34-0410-b5e6-96231b3b80d8
17 lines
405 B
LLVM
17 lines
405 B
LLVM
; RUN: llc -mtriple=thumbv7-linux-gnueabi -O0 -arm-tail-calls < %s | FileCheck %s
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; Primarily a non-crash test: Thumbv7 Linux does not have FastISel support,
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; which led (via a convoluted route) to DAG nodes after a TC_RETURN that
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; couldn't possibly work.
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declare i8* @g(i8*)
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define i8* @f(i8* %a) {
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entry:
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%0 = tail call i8* @g(i8* %a)
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ret i8* %0
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; CHECK: b g
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; CHECK-NOT: ldr
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; CHECK-NOT: str
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}
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