| ; 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(void ()* @g)` |
| ; could become |
| ; `call void @g(void ()* @g.1)` |
| ; which is invalid IR. |
| |
| ; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -amdgpu-propagate-attributes-late %s | FileCheck %s |
| |
| ; CHECK-LABEL: define amdgpu_kernel void @thiswasabug() #0 |
| ; CHECK-NOT: call void @g(void ()* @g.1) |
| ; CHECK-DAG: call void @f(void ()* @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(void ()* @g) |
| |
| ; this should call the clone, which takes the name @g |
| call void @g() |
| ret void |
| } |
| |
| define private void @f(void ()* 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" } |