[test][NFC] Use plain FileCheck in statepoint-stackmap-size.ll

[hubert.reinterpretcast]

Summary

The test in question uses a non-portable grep -A option in conjunction with wc -l. FileCheck can be used to do the check without using these extra utilities.

[thakis]

Seems fine, but lots of other tests probably need grep and wc? What's the motivation for this? (But if solves some problem for you, fine to land. Just curious.)

[hubert.reinterpretcast]

In D78060#1982376, @thakis wrote:

Seems fine, but lots of other tests probably need grep and wc? What's the motivation for this? (But if solves some problem for you, fine to land. Just curious.)

Portable use of grep and wc is probably fine. The issue is that grep -A is not a valid option on the system I'm using. I checked, and the option is not standardized.

llvm/test/CodeGen/X86/statepoint-stackmap-size.ll

-; RUN: llc  -verify-machineinstrs < %s | grep -F -A 10000 .llvm_stackmaps | wc -l | FileCheck %s
+; RUN: llc  -verify-machineinstrs < %s | FileCheck %s
 
 ; Without removal of duplicate entries, the size is 62 lines
-; CHECK: 50
+;      CHECK: .section  .llvm_stackmaps,{{.*$}}
+; CHECK-NEXT:{{(.+$[[:space:]]){48}[[:space:]]}}
+;  CHECK-NOT:{{.|[[:space:]]}}
 
 target triple = "x86_64-pc-linux-gnu"
 
 declare void @func()
 
 define i1 @test1(i32 addrspace(1)* %arg) gc "statepoint-example" {
 entry:
   %safepoint_token = call token (i64, i32, void ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_isVoidf(i64 0, i32 0, void ()* @func, i32 0, i32 0, i32 0, i32 0, i32 addrspace(1)* %arg)