[llvm] [BasicBlockSections] Always keep the entry block in the beginning of the function. (PR #74696)

[Sriraman Tallam via llvm-commits]

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@@ -5,10 +5,6 @@
 ; RUN: echo '!!1' >> %t1
 ; RUN: not --crash llc < %s -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=%t1 2>&1 | FileCheck %s --check-prefix=CHECK-ERROR1
 ; CHECK-ERROR1: LLVM ERROR: invalid profile {{.*}} at line 3: duplicate basic block id found '1'
-; RUN: echo '!dummy1' > %t2
-; RUN: echo '!!4 0' >> %t2
-; RUN: not --crash llc < %s -O0 -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=%t2 2>&1 | FileCheck %s --check-prefix=CHECK-ERROR2
-; CHECK-ERROR2: LLVM ERROR: invalid profile {{.*}} at line 2: entry BB (0) does not begin a cluster
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tmsri wrote:

This test is pretty large, please split this into multiple tests, can be done in a separate patch.

https://github.com/llvm/llvm-project/pull/74696