[llvm] [AMDGPU] Guard named barrier intrinsics with gfx12-insts (PR #227607)

[Matt Arsenault via llvm-commits]

================
@@ -0,0 +1,90 @@
+; RUN: split-file %s %t
+
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/signal.ll 2>&1 | FileCheck -check-prefix=ERR-SIGNAL %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/signal-var.ll 2>&1 | FileCheck -check-prefix=ERR-SIGNAL-VAR %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/signal-isfirst.ll 2>&1 | FileCheck -check-prefix=ERR-SIGNAL-ISFIRST %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/init.ll 2>&1 | FileCheck -check-prefix=ERR-INIT %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/join.ll 2>&1 | FileCheck -check-prefix=ERR-JOIN %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/wait.ll 2>&1 | FileCheck -check-prefix=ERR-WAIT %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/leave.ll 2>&1 | FileCheck -check-prefix=ERR-LEAVE %s
+; RUN: not llc -global-isel=0 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/get-state.ll 2>&1 | FileCheck -check-prefix=ERR-GET-STATE %s
+
+; TODO: GIsel should not crash.
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/signal.ll 2>&1 | FileCheck -check-prefix=ERR-SIGNAL %s
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/signal-var.ll 2>&1 | FileCheck -check-prefix=ERR-SIGNAL-VAR %s
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/signal-isfirst.ll 2>&1 | FileCheck -check-prefix=ERR-SIGNAL-ISFIRST %s
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/init.ll 2>&1 | FileCheck -check-prefix=ERR-INIT %s
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/join.ll 2>&1 | FileCheck -check-prefix=ERR-JOIN %s
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/wait.ll 2>&1 | FileCheck -check-prefix=ERR-WAIT %s
+; RUN: not llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/leave.ll 2>&1 | FileCheck -check-prefix=ERR-LEAVE %s
+; RUN: not --crash llc -global-isel=1 -mtriple=amdgpu9.42-amd-amdhsa -filetype=null %t/get-state.ll 2>&1 | FileCheck -check-prefix=ERR-GET-STATE %s
+
+;--- signal.ll
+; ERR-SIGNAL: error: {{.*}}in function @signal void (): llvm.amdgcn.s.barrier.signal requires target feature 'gfx12-insts'
+
+define amdgpu_kernel void @signal() {
+  call void @llvm.amdgcn.s.barrier.signal(i32 -1)
+  ret void
+}
+
+;--- signal-var.ll
+; ERR-SIGNAL-VAR: error: {{.*}}in function @signal_var void (): llvm.amdgcn.s.barrier.signal.var requires target feature 'gfx12-insts'
+
+ at bar_signal_var = addrspace(15) global target("amdgcn.named.barrier", 0) poison
+
+define amdgpu_kernel void @signal_var() {
+  call void @llvm.amdgcn.s.barrier.signal.var(ptr addrspace(15) @bar_signal_var, i32 4)
+  ret void
+}
+
+;--- signal-isfirst.ll
+; ERR-SIGNAL-ISFIRST: error: {{.*}}in function @signal_isfirst void (): llvm.amdgcn.s.barrier.signal.isfirst requires target feature 'gfx12-insts'
+
+define amdgpu_kernel void @signal_isfirst() {
+  %r = call i1 @llvm.amdgcn.s.barrier.signal.isfirst(i32 -1)
+  ret void
+}
+
+;--- init.ll
+; ERR-INIT: error: {{.*}}in function @init void (): llvm.amdgcn.s.barrier.init requires target feature 'gfx12-insts'
+
+ at bar_init = addrspace(15) global target("amdgcn.named.barrier", 0) poison
+
+define amdgpu_kernel void @init() {
+  call void @llvm.amdgcn.s.barrier.init(ptr addrspace(15) @bar_init, i32 4)
+  ret void
+}
+
+;--- join.ll
+; ERR-JOIN: error: {{.*}}in function @join void (): llvm.amdgcn.s.barrier.join requires target feature 'gfx12-insts'
+
+ at bar_join = addrspace(15) global target("amdgcn.named.barrier", 0) poison
----------------
arsenm wrote:

can you use null instead of a defined global 

https://github.com/llvm/llvm-project/pull/227607