[llvm] [GVN] Add code to disable scalar PRE (PR #190386)

[Antonio Frighetto via llvm-commits]

================
@@ -31,8 +31,8 @@
 ; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(loop-unroll<>,loop-unroll<partial;peeling;runtime;upperbound;profile-peeling;full-unroll-max=5;O1>,loop-unroll<no-partial;no-peeling;no-runtime;no-upperbound;no-profile-peeling;full-unroll-max=7;O1>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-10
 ; CHECK-10: function(loop-unroll<O2>,loop-unroll<partial;peeling;runtime;upperbound;profile-peeling;full-unroll-max=5;O1>,loop-unroll<no-partial;no-peeling;no-runtime;no-upperbound;no-profile-peeling;full-unroll-max=7;O1>)
 
-; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(gvn<>,gvn<pre;load-pre;split-backedge-load-pre;memdep;memoryssa>,gvn<no-pre;no-load-pre;no-split-backedge-load-pre;no-memdep;no-memoryssa>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-11
-; CHECK-11: function(gvn<>,gvn<pre;load-pre;split-backedge-load-pre;no-memdep;memoryssa>,gvn<no-pre;no-load-pre;no-split-backedge-load-pre;memdep;no-memoryssa>)
+; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(gvn<>,gvn<scalar-pre;load-pre;split-backedge-load-pre;memdep;memoryssa>,gvn<no-pre;no-load-pre;no-split-backedge-load-pre;no-memdep;no-memoryssa>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-11
----------------
antoniofrighetto wrote:

```suggestion
; RUN: opt -disable-output -disable-verify -print-pipeline-passes -passes='function(gvn<>,gvn<scalar-pre;load-pre;split-backedge-load-pre;memdep;memoryssa>,gvn<no-scalar-pre;no-load-pre;no-split-backedge-load-pre;no-memdep;no-memoryssa>)' < %s | FileCheck %s --match-full-lines --check-prefixes=CHECK-11
```

https://github.com/llvm/llvm-project/pull/190386