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; This is a regression test for a bug in the AMDGPU Propagate Attributes pass
; where a call instruction's callee could be replaced with a function pointer
; passed to the original call instruction as an argument.
;
; Example:
; `call void @f(ptr @g)`
; could become
; `call void @g(ptr @g.1)`
; which is invalid IR.
; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -passes=amdgpu-propagate-attributes-late %s | FileCheck %s
; CHECK-LABEL: define amdgpu_kernel void @thiswasabug() #0
; CHECK-NOT: call void @g(ptr @g.1)
; CHECK-DAG: call void @f(ptr @g.1)
; CHECK-DAG: call void @g()
define amdgpu_kernel void @thiswasabug() #0 {
; no replacement, but @g should be renamed to @g.1
call void @f(ptr @g)
; this should call the clone, which takes the name @g
call void @g()
ret void
}
define private void @f(ptr nocapture %0) #0 {
ret void
}
; In order to expose this bug, it is necessary that `g` have one of the
; propagated attributes, so that a clone and substitution would take place if g
; were actually the function being called.
; CHECK-DAG: define private void @g.1() #1
; CHECK-DAG: define internal void @g() #2
define private void @g() #1 {
ret void
}
attributes #0 = { noinline }
attributes #1 = { noinline "amdgpu-waves-per-eu"="1,10" }
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