[NFC][asan] Don't cd after split-file (llvm#104727)

Helps with copy-pasting of command line
with error.

Author: vitalybuka

llvm/test/Instrumentation/AddressSanitizer/global_metadata_array.ll

@@ -1,10 +1,10 @@
-; RUN: rm -rf %t && split-file %s %t && cd %t
-; RUN: opt < a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=CHECK %s
-; RUN: opt < a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-apple-macosx10.11.0 -S | FileCheck --check-prefix=CHECK %s
-; RUN: opt < a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-pc-windows-msvc19.0.24215 -S | FileCheck --check-prefix=CHECK %s
-; RUN: opt < a.ll -passes=asan -asan-globals-live-support=0 -asan-mapping-scale=5 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefixes=CHECK,CHECK-S5 %s
+; RUN: rm -rf %t && split-file %s %t
+; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=CHECK %s
+; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-apple-macosx10.11.0 -S | FileCheck --check-prefix=CHECK %s
+; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-pc-windows-msvc19.0.24215 -S | FileCheck --check-prefix=CHECK %s
+; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=0 -asan-mapping-scale=5 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefixes=CHECK,CHECK-S5 %s
 
-; RUN: opt < empty.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=ELF-NOGC %s
+; RUN: opt < %t/empty.ll -passes=asan -asan-globals-live-support=0 -mtriple=x86_64-unknown-linux-gnu -S | FileCheck --check-prefix=ELF-NOGC %s
 
 ;--- a.ll
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"

llvm/test/Instrumentation/AddressSanitizer/global_with_comdat.ll

@@ -4,12 +4,12 @@
 ; We keep using comdats for garbage collection if odr indicators are
 ; enabled as indicator symbols will cause link time odr violations.
 ; This is to fix PR 47925.
-; RUN: rm -rf %t && split-file %s %t && cd %t
-; RUN: opt < a.ll -passes=asan -asan-globals-live-support=1 -asan-use-odr-indicator=0 -S | FileCheck %s --check-prefixes=CHECK,NOCOMDAT
+; RUN: rm -rf %t && split-file %s %t
+; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=1 -asan-use-odr-indicator=0 -S | FileCheck %s --check-prefixes=CHECK,NOCOMDAT
 ; Check that enabling odr indicators enables comdat for globals.
-; RUN: opt < a.ll -passes=asan -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,COMDAT
+; RUN: opt < %t/a.ll -passes=asan -asan-globals-live-support=1 -S | FileCheck %s --check-prefixes=CHECK,COMDAT
 
-; RUN: opt < no_module_id.ll -passes=asan -S | FileCheck %s --check-prefix=NOMODULEID
+; RUN: opt < %t/no_module_id.ll -passes=asan -S | FileCheck %s --check-prefix=NOMODULEID
 
 ;--- a.ll
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"