[ELF,test] Remove unneeded -o /dev/null

MaskRay · MaskRay · commit 0ffe270d0e1d · 2025-02-19T09:15:26.000-08:00
When the script has executed `cd %t`, it is fine to to use the output
file `a.out`.
(We don't want to rely on lit's default PWD to support lit compatible
runners. Therefore -o /dev/null is used when PWD has not been changed
to a %t derived path.)
diff --git a/lld/test/ELF/aarch64-feature-gcs.s b/lld/test/ELF/aarch64-feature-gcs.s
@@ -36,15 +36,15 @@
 
 ## gcs-report should report any input files that don't have the gcs property.
 
-# RUN: ld.lld func1-gcs.o func2.o func3-gcs.o -o /dev/null -z gcs-report=warning 2>&1 | FileCheck --check-prefix=REPORT-WARN %s
-# RUN: ld.lld func1-gcs.o func2.o func3-gcs.o -o /dev/null -z gcs-report=warning -z gcs=always 2>&1 | FileCheck --check-prefix=REPORT-WARN %s
-# RUN: ld.lld func1-gcs.o func2.o func3-gcs.o -o /dev/null -z gcs-report=warning -z gcs=never 2>&1 | FileCheck --check-prefix=REPORT-WARN %s
-# RUN: not ld.lld func2-gcs.o func3.o --shared -o /dev/null -z gcs-report=error 2>&1 | FileCheck --check-prefix=REPORT-ERROR %s
-# RUN: not ld.lld func2-gcs.o func3.o --shared -o /dev/null -z gcs-report=error -z gcs=always 2>&1 | FileCheck --check-prefix=REPORT-ERROR %s
-# RUN: not ld.lld func2-gcs.o func3.o --shared -o /dev/null -z gcs-report=error -z gcs=never 2>&1 | FileCheck --check-prefix=REPORT-ERROR %s
-# RUN: ld.lld func1-gcs.o func2-gcs.o func3-gcs.o -o /dev/null -z gcs-report=warning 2>&1 | count 0
-# RUN: ld.lld func1-gcs.o func2-gcs.o func3-gcs.o -o /dev/null -z gcs-report=warning -z gcs=always 2>&1 | count 0
-# RUN: ld.lld func1-gcs.o func2-gcs.o func3-gcs.o -o /dev/null -z gcs-report=warning -z gcs=never 2>&1 | count 0
+# RUN: ld.lld func1-gcs.o func2.o func3-gcs.o -z gcs-report=warning 2>&1 | FileCheck --check-prefix=REPORT-WARN %s
+# RUN: ld.lld func1-gcs.o func2.o func3-gcs.o -z gcs-report=warning -z gcs=always 2>&1 | FileCheck --check-prefix=REPORT-WARN %s
+# RUN: ld.lld func1-gcs.o func2.o func3-gcs.o -z gcs-report=warning -z gcs=never 2>&1 | FileCheck --check-prefix=REPORT-WARN %s
+# RUN: not ld.lld func2-gcs.o func3.o --shared -z gcs-report=error 2>&1 | FileCheck --check-prefix=REPORT-ERROR %s
+# RUN: not ld.lld func2-gcs.o func3.o --shared -z gcs-report=error -z gcs=always 2>&1 | FileCheck --check-prefix=REPORT-ERROR %s
+# RUN: not ld.lld func2-gcs.o func3.o --shared -z gcs-report=error -z gcs=never 2>&1 | FileCheck --check-prefix=REPORT-ERROR %s
+# RUN: ld.lld func1-gcs.o func2-gcs.o func3-gcs.o -z gcs-report=warning 2>&1 | count 0
+# RUN: ld.lld func1-gcs.o func2-gcs.o func3-gcs.o -z gcs-report=warning -z gcs=always 2>&1 | count 0
+# RUN: ld.lld func1-gcs.o func2-gcs.o func3-gcs.o -z gcs-report=warning -z gcs=never 2>&1 | count 0
 
 # REPORT-WARN: warning: func2.o: -z gcs-report: file does not have GNU_PROPERTY_AARCH64_FEATURE_1_GCS property
 # REPORT-ERROR: error: func3.o: -z gcs-report: file does not have GNU_PROPERTY_AARCH64_FEATURE_1_GCS property
diff --git a/lld/test/ELF/allow-shlib-undefined-weak.s b/lld/test/ELF/allow-shlib-undefined-weak.s
@@ -21,7 +21,7 @@
 # RUN: ld.lld -shared wrap.o def.so -o wrap.so
 
 # RUN: llvm-mc -filetype=obj -triple=x86_64 start.s -o start.o
-# RUN: ld.lld --no-allow-shlib-undefined start.o wrap.so ref.so -o /dev/null 2>&1 | count 0
+# RUN: ld.lld --no-allow-shlib-undefined start.o wrap.so ref.so 2>&1 | count 0
 
 #--- start.s
 .globl _start
diff --git a/lld/test/ELF/allow-shlib-undefined.s b/lld/test/ELF/allow-shlib-undefined.s
@@ -9,40 +9,40 @@
 # RUN: cp a.so b.so
 # RUN: llvm-mc -filetype=obj -triple=x86_64 empty.s -o empty.o && ld.lld -shared empty.o -o empty.so
 
-# RUN: ld.lld --allow-shlib-undefined main.o a.so -o /dev/null
-# RUN: not ld.lld --no-allow-shlib-undefined main.o a.so -o /dev/null 2>&1 | FileCheck %s
+# RUN: ld.lld --allow-shlib-undefined main.o a.so
+# RUN: not ld.lld --no-allow-shlib-undefined main.o a.so 2>&1 | FileCheck %s
 ## Executable linking defaults to --no-allow-shlib-undefined.
-# RUN: not ld.lld main.o a.so -o /dev/null 2>&1 | FileCheck %s
-# RUN: ld.lld main.o a.so --noinhibit-exec -o /dev/null 2>&1 | FileCheck %s --check-prefix=WARN
-# RUN: ld.lld main.o a.so --warn-unresolved-symbols -o /dev/null 2>&1 | FileCheck %s --check-prefix=WARN
+# RUN: not ld.lld main.o a.so 2>&1 | FileCheck %s
+# RUN: ld.lld main.o a.so --noinhibit-exec 2>&1 | FileCheck %s --check-prefix=WARN
+# RUN: ld.lld main.o a.so --warn-unresolved-symbols 2>&1 | FileCheck %s --check-prefix=WARN
 ## -shared linking defaults to --allow-shlib-undefined.
-# RUN: ld.lld -shared main.o a.so -o /dev/null
+# RUN: ld.lld -shared main.o a.so
 
 ## DSO with undefines should link with or without any of these options.
-# RUN: ld.lld -shared --allow-shlib-undefined a.o -o /dev/null
-# RUN: ld.lld -shared --no-allow-shlib-undefined a.o -o /dev/null
+# RUN: ld.lld -shared --allow-shlib-undefined a.o
+# RUN: ld.lld -shared --no-allow-shlib-undefined a.o
 
 ## Perform checking even if an unresolved symbol is first seen in a regular object file.
-# RUN: not ld.lld --gc-sections main.o ref.o a.so -o /dev/null 2>&1 | FileCheck %s
+# RUN: not ld.lld --gc-sections main.o ref.o a.so 2>&1 | FileCheck %s
 
 ## Check that the error is reported for each shared library where the symbol
 ## is referenced.
-# RUN: not ld.lld main.o a.so empty.so b.so -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK2
+# RUN: not ld.lld main.o a.so empty.so b.so 2>&1 | FileCheck %s --check-prefix=CHECK2
 
 ## Test some cases when a relocatable object file provides a non-exported definition.
-# RUN: not ld.lld main.o a.so def-hidden.o -o /dev/null 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
-# RUN: not ld.lld main.o def-hidden.o a.so -o /dev/null 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
-# RUN: not ld.lld main.o a.so def-hidden.o -shared --no-allow-shlib-undefined -o /dev/null 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
-# RUN: ld.lld main.o a.so def-hidden.o --allow-shlib-undefined --fatal-warnings -o /dev/null
+# RUN: not ld.lld main.o a.so def-hidden.o 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
+# RUN: not ld.lld main.o def-hidden.o a.so 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
+# RUN: not ld.lld main.o a.so def-hidden.o -shared --no-allow-shlib-undefined 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
+# RUN: ld.lld main.o a.so def-hidden.o --allow-shlib-undefined --fatal-warnings
 ## Test a relocatable object file definition that is converted to STB_LOCAL.
-# RUN: not ld.lld main.o a.so def-hidden.o --version-script=local.ver -o /dev/null 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
-# RUN: not ld.lld main.o def-hidden.o a.so --version-script=local.ver -o /dev/null 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
+# RUN: not ld.lld main.o a.so def-hidden.o --version-script=local.ver 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
+# RUN: not ld.lld main.o def-hidden.o a.so --version-script=local.ver 2>&1 | FileCheck %s --check-prefix=NONEXPORTED
 
 ## The section containing the definition is discarded, and we report an error.
-# RUN: not ld.lld --gc-sections main.o a.so def-hidden.o -o /dev/null 2>&1 | FileCheck %s
+# RUN: not ld.lld --gc-sections main.o a.so def-hidden.o 2>&1 | FileCheck %s
 ## The definition def.so is ignored.
 # RUN: ld.lld -shared def.o -o def.so
-# RUN: ld.lld --gc-sections main.o a.so def.so def-hidden.o --fatal-warnings -o /dev/null
+# RUN: ld.lld --gc-sections main.o a.so def.so def-hidden.o --fatal-warnings
 
 # CHECK-NOT:   error:
 # CHECK:       error: undefined reference: x1{{$}}
diff --git a/lld/test/ELF/arm-cmse-diagnostics.s b/lld/test/ELF/arm-cmse-diagnostics.s
@@ -7,11 +7,11 @@
 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj --triple=thumbv8m.base lib -o lib.o
 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj --triple=thumbv8m.base app -I %S/Inputs -o app.o
 // RUN: llvm-objcopy --redefine-sym=entry7_duplicate=entry6_duplicate lib.o
-// RUN: not ld.lld --cmse-implib --in-implib=lib.o app.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=ERR_IMPLIB
-// RUN: not ld.lld --cmse-implib --in-implib=lib.o --in-implib=lib.o app.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=ERR_MULT_INIMPLIB
-// RUN: not ld.lld --in-implib=lib.o app.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=ERR_IN_IMPLIB
-// RUN: not ld.lld --out-implib=out.lib app.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=ERR_OUT_IMPLIB
-// RUN: not ld.lld --out-implib=out.lib --in-implib=lib.o app.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=ERR_IN_IMPLIB,ERR_OUT_IMPLIB
+// RUN: not ld.lld --cmse-implib --in-implib=lib.o app.o 2>&1 | FileCheck %s --check-prefixes=ERR_IMPLIB
+// RUN: not ld.lld --cmse-implib --in-implib=lib.o --in-implib=lib.o app.o 2>&1 | FileCheck %s --check-prefixes=ERR_MULT_INIMPLIB
+// RUN: not ld.lld --in-implib=lib.o app.o 2>&1 | FileCheck %s --check-prefixes=ERR_IN_IMPLIB
+// RUN: not ld.lld --out-implib=out.lib app.o 2>&1 | FileCheck %s --check-prefixes=ERR_OUT_IMPLIB
+// RUN: not ld.lld --out-implib=out.lib --in-implib=lib.o app.o 2>&1 | FileCheck %s --check-prefixes=ERR_IN_IMPLIB,ERR_OUT_IMPLIB
 
 // ERR_IMPLIB: error: CMSE symbol 'entry_not_external' in import library '{{.*}}' is not global
 // ERR_IMPLIB: error: CMSE symbol 'entry_not_absolute' in import library '{{.*}}' is not absolute
@@ -91,7 +91,7 @@
 /// Test diagnostics emitted during symbol attribute checks.
 
 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -I %S/Inputs --triple=thumbv8m.base symattr -o symattr.o
-// RUN: not ld.lld --cmse-implib symattr.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=ERR_SYMATTR
+// RUN: not ld.lld --cmse-implib symattr.o 2>&1 | FileCheck %s --check-prefixes=ERR_SYMATTR
 
 // ERR_SYMATTR-NOT: __acle_se_valid_{{.*}}
 // ERR_SYMATTR: error: {{.*}}: cmse special symbol '__acle_se_invalid_1' is not a Thumb function definition
@@ -110,9 +110,9 @@
 /// Test diagnostics emitted when a symbol is removed from a later version of the import library.
 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -I %S/Inputs --triple=thumbv8m.base libv1 -o libv1.o
 // RUN: llvm-mc -arm-add-build-attributes -filetype=obj -I %S/Inputs --triple=thumbv8m.base libv2 -o libv2.o
-// RUN: ld.lld -Ttext=0x8000 --section-start .gnu.sgstubs=0x20000 --cmse-implib libv1.o --out-implib=libv1.lib -o /dev/null
-// RUN: ld.lld -Ttext=0x8000 --section-start .gnu.sgstubs=0x20000 --cmse-implib libv2.o --in-implib=libv1.lib --out-implib=libv2.lib -o /dev/null 2>&1 | FileCheck %s --check-prefixes=WARN_MISSING
-// RUN: ld.lld -Ttext=0x8000 --section-start .gnu.sgstubs=0x20000 --cmse-implib libv1.o --in-implib=libv2.lib -o /dev/null 2>&1 | FileCheck %s --check-prefixes=WARN_NEWENTRY
+// RUN: ld.lld -Ttext=0x8000 --section-start .gnu.sgstubs=0x20000 --cmse-implib libv1.o --out-implib=libv1.lib
+// RUN: ld.lld -Ttext=0x8000 --section-start .gnu.sgstubs=0x20000 --cmse-implib libv2.o --in-implib=libv1.lib --out-implib=libv2.lib 2>&1 | FileCheck %s --check-prefixes=WARN_MISSING
+// RUN: ld.lld -Ttext=0x8000 --section-start .gnu.sgstubs=0x20000 --cmse-implib libv1.o --in-implib=libv2.lib 2>&1 | FileCheck %s --check-prefixes=WARN_NEWENTRY
 
 // WARN_MISSING: warning: entry function 'bar' from CMSE import library is not present in secure application
 // WARN_NEWENTRY: warning: new entry function 'bar' introduced but no output import library specified
diff --git a/lld/test/ELF/avr-reloc-error.s b/lld/test/ELF/avr-reloc-error.s
@@ -3,13 +3,13 @@
 # RUN: rm -rf %t && split-file %s %t && cd %t
 
 # RUN: llvm-mc -filetype=obj -triple=avr -mcpu=atmega328 avr-pcrel-7.s -o avr-pcrel-7.o
-# RUN: not ld.lld avr-pcrel-7.o -o /dev/null -Ttext=0x1000 --defsym=callee0=0x1040 --defsym=callee1=0x1084 --defsym=callee2=0x100f 2>&1 | \
+# RUN: not ld.lld avr-pcrel-7.o -Ttext=0x1000 --defsym=callee0=0x1040 --defsym=callee1=0x1084 --defsym=callee2=0x100f 2>&1 | \
 # RUN:     FileCheck %s --check-prefix=PCREL7
 # RUN: llvm-mc -filetype=obj -triple=avr -mcpu=atmega328 avr-pcrel-13.s -o avr-pcrel-13.o
-# RUN: not ld.lld avr-pcrel-13.o -o /dev/null -Ttext=0x1000 --defsym=callee0=0x2000 --defsym=callee1=0x2004 --defsym=callee2=0x100f 2>&1 | \
+# RUN: not ld.lld avr-pcrel-13.o -Ttext=0x1000 --defsym=callee0=0x2000 --defsym=callee1=0x2004 --defsym=callee2=0x100f 2>&1 | \
 # RUN:     FileCheck %s --check-prefix=PCREL13
 # RUN: llvm-mc -filetype=obj -triple=avr -mcpu=atmega328 avr-abs.s -o avr-abs.o
-# RUN: not ld.lld avr-abs.o -o /dev/null -Ttext=0x1000 --defsym=callee0=0x1009 --defsym=callee1=0x1010 2>&1 | \
+# RUN: not ld.lld avr-abs.o -Ttext=0x1000 --defsym=callee0=0x1009 --defsym=callee1=0x1010 2>&1 | \
 # RUN:     FileCheck %s --check-prefix=ABS
 
 #--- avr-pcrel-7.s
diff --git a/lld/test/ELF/common-archive-lookup.s b/lld/test/ELF/common-archive-lookup.s
@@ -69,7 +69,7 @@
 # RUN: FileCheck --check-prefix=ASM %s < out.lto.s
 
 ## COMMON overrides weak. Don't extract 3.bc which provides a weak definition.
-# RUN: ld.lld -o /dev/null main.o --start-lib 1.bc 3.bc --end-lib -y block | FileCheck --check-prefix=LTO_WEAK %s
+# RUN: ld.lld main.o --start-lib 1.bc 3.bc --end-lib -y block | FileCheck --check-prefix=LTO_WEAK %s
 
 ## Old FORTRAN that mixes use of COMMON blocks and BLOCK DATA requires that we
 ## search through archives for non-tentative definitions (from the BLOCK DATA)
diff --git a/lld/test/ELF/duplicated-synthetic-sym.s b/lld/test/ELF/duplicated-synthetic-sym.s
@@ -1,14 +1,12 @@
 // REQUIRES: x86
-// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
-// RUN: rm -rf %t.dir
-// RUN: mkdir %t.dir
-// RUN: cd %t.dir
+// RUN: rm -rf %t && mkdir %t && cd %t
+// RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o a.o
 // RUN: echo > file.bin
 
-// RUN: not ld.lld %t.o --format=binary file.bin -o /dev/null 2>&1 | FileCheck %s
-// RUN: not ld.lld %t.o --format binary file.bin -o /dev/null 2>&1 | FileCheck %s
+// RUN: not ld.lld a.o --format=binary file.bin 2>&1 | FileCheck %s
+// RUN: not ld.lld a.o --format binary file.bin 2>&1 | FileCheck %s
 
-// CHECK:      duplicate symbol: _binary_file_bin_start
+// CHECK:      error: duplicate symbol: _binary_file_bin_start
 // CHECK-NEXT: defined in {{.*}}.o
 // CHECK-NEXT: defined in file.bin
 
diff --git a/lld/test/ELF/linkerscript/discard-section.s b/lld/test/ELF/linkerscript/discard-section.s
@@ -4,8 +4,8 @@
 # RUN: rm -rf %t && split-file %s %t && cd %t
 # RUN: llvm-mc -filetype=obj -triple=x86_64 a.s -o a.o
 # RUN: llvm-mc -filetype=obj -triple=x86_64 b.s -o b.o
-# RUN: not ld.lld --threads=1 -T a.lds a.o b.o -z undefs -o /dev/null 2>&1 | FileCheck %s --check-prefix=LOCAL --implicit-check-not=error:
-# RUN: not ld.lld --threads=1 -T a.lds a.o b.o -o /dev/null 2>&1 | FileCheck %s --check-prefixes=LOCAL,NONLOCAL --implicit-check-not=error:
+# RUN: not ld.lld --threads=1 -T a.lds a.o b.o -z undefs 2>&1 | FileCheck %s --check-prefix=LOCAL --implicit-check-not=error:
+# RUN: not ld.lld --threads=1 -T a.lds a.o b.o 2>&1 | FileCheck %s --check-prefixes=LOCAL,NONLOCAL --implicit-check-not=error:
 # RUN: ld.lld -r -T a.lds a.o b.o -o a.ro 2>&1 | FileCheck %s --check-prefix=WARNING --implicit-check-not=warning:
 # RUN: llvm-readelf -r -s a.ro | FileCheck %s --check-prefix=RELOC
 
diff --git a/lld/test/ELF/linkerscript/input-relative.s b/lld/test/ELF/linkerscript/input-relative.s
@@ -31,13 +31,13 @@
 
 ## The rules does not apply to an absolute path.
 # RUN: echo 'INPUT(/libb.a)' > dir/absolute.lds
-# RUN: not ld.lld a.o dir/absolute.lds -o /dev/null
+# RUN: not ld.lld a.o dir/absolute.lds
 
 ## If the parent directory of the current linker script does not contain the file,
 ## fall back to the current working directory.
 # RUN: cp libb.a libc.a
 # RUN: echo 'INPUT(libc.a)' > dir/fallback.lds
-# RUN: ld.lld a.o dir/fallback.lds -o /dev/null
+# RUN: ld.lld a.o dir/fallback.lds
 
 .globl _start
 _start:
diff --git a/lld/test/ELF/linkerscript/locationcountererr-arm-exidx.test b/lld/test/ELF/linkerscript/locationcountererr-arm-exidx.test
@@ -5,7 +5,7 @@
 ## If we don't merge adjacent duplicate entries, __code_size will be negative and
 ## . += __code_size will trigger a "move location counter backward" error.
 ## LLD may report more errors further down, but there is only one "move location counter backward" error.
-# RUN: not ld.lld -z norelro -z max-page-size=4096 -T a.t a.o -o /dev/null --no-merge-exidx-entries 2>&1 | \
+# RUN: not ld.lld -z norelro -z max-page-size=4096 -T a.t a.o --no-merge-exidx-entries 2>&1 | \
 # RUN:   FileCheck %s --check-prefix=ERR --implicit-check-not=error:
 
 # ERR:      error: a.t:9: unable to move location counter (0x1000) backward to 0xf6c for section 'dummy1'
diff --git a/lld/test/ELF/lto/archive-mixed.test b/lld/test/ELF/lto/archive-mixed.test
@@ -19,22 +19,22 @@
 ; RUN: llvm-ar rc other.bc.a a.bc
 ; RUN: llvm-ar rc other.o.a a.o
 
-; RUN: ld.lld -o /dev/null --trace ref.o a.bc.b.bc.a other.bc.a | \
+; RUN: ld.lld --trace ref.o a.bc.b.bc.a other.bc.a | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
-; RUN: ld.lld -o /dev/null --trace ref.o a.bc.b.bc.a other.o.a  | \
+; RUN: ld.lld --trace ref.o a.bc.b.bc.a other.o.a  | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
-; RUN: ld.lld -o /dev/null --trace ref.o a.bc.b.o.a  other.bc.a | \
+; RUN: ld.lld --trace ref.o a.bc.b.o.a  other.bc.a | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
-; RUN: ld.lld -o /dev/null --trace ref.o a.bc.b.o.a  other.o.a  | \
+; RUN: ld.lld --trace ref.o a.bc.b.o.a  other.o.a  | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
-; RUN: ld.lld -o /dev/null --trace ref.o a.o.b.bc.a  other.bc.a | \
+; RUN: ld.lld --trace ref.o a.o.b.bc.a  other.bc.a | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
-; RUN: ld.lld -o /dev/null --trace ref.o a.o.b.bc.a  other.o.a  | \
+; RUN: ld.lld --trace ref.o a.o.b.bc.a  other.o.a  | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
-; RUN: ld.lld -o /dev/null --trace ref.o a.o.b.o.a   other.bc.a | \
+; RUN: ld.lld --trace ref.o a.o.b.o.a   other.bc.a | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
 ;; Not an LTO test case, but here for completeness.
-; RUN: ld.lld -o /dev/null --trace ref.o a.o.b.o.a   other.o.a  | \
+; RUN: ld.lld --trace ref.o a.o.b.o.a   other.o.a  | \
 ; RUN:   FileCheck %s --implicit-check-not={{.}}
 
 ; CHECK:      ref.o
diff --git a/lld/test/ELF/lto/obj-path.ll b/lld/test/ELF/lto/obj-path.ll
@@ -54,14 +54,14 @@
 
 ;; With --thinlto-index-only, --lto-obj-path= creates just one file.
 ; RUN: rm -f objpath.o objpath.o1 objpath.o2
-; RUN: ld.lld --thinlto-index-only --lto-obj-path=objpath.o -shared 1.bc d/2.bc -o /dev/null
+; RUN: ld.lld --thinlto-index-only --lto-obj-path=objpath.o -shared 1.bc d/2.bc
 ; RUN: llvm-objdump -d objpath.o | FileCheck %s --check-prefix=EMPTY
 ; RUN: not ls objpath.o1
 ; RUN: not ls objpath.o2
 
 ;; Test --plugin-opt=obj-path=.
 ; RUN: rm -f objpath.o
-; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=obj-path=objpath.o -shared 1.bc d/2.bc -o /dev/null
+; RUN: ld.lld --plugin-opt=thinlto-index-only --plugin-opt=obj-path=objpath.o -shared 1.bc d/2.bc
 ; RUN: llvm-objdump -d objpath.o | FileCheck %s --check-prefix=EMPTY
 
 ;; Ensure lld emits empty combined module if specific obj-path.
diff --git a/lld/test/ELF/lto/parallel.ll b/lld/test/ELF/lto/parallel.ll
@@ -5,7 +5,7 @@
 ; RUN: llvm-nm out.lto.o | FileCheck --check-prefix=CHECK0 %s
 ; RUN: llvm-nm out.lto.1.o | FileCheck --check-prefix=CHECK1 %s
 
-; RUN: not ld.lld --lto-partitions=0 a.bc -o /dev/null 2>&1 | FileCheck --check-prefix=INVALID %s
+; RUN: not ld.lld --lto-partitions=0 a.bc 2>&1 | FileCheck --check-prefix=INVALID %s
 ; INVALID: --lto-partitions: number of threads must be > 0
 
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
diff --git a/lld/test/ELF/non-abs-reloc.s b/lld/test/ELF/non-abs-reloc.s
@@ -15,13 +15,13 @@
 // DISASM-NEXT:   6: call{{.}} 0x5
 
 /// There is currently no error for -r. See also https://github.com/ClangBuiltLinux/linux/issues/1937
-// RUN: ld.lld -T lds -r a.o -o /dev/null 2>&1 | FileCheck %s --check-prefix=REL-R --implicit-check-not=warning:
+// RUN: ld.lld -T lds -r a.o 2>&1 | FileCheck %s --check-prefix=REL-R --implicit-check-not=warning:
 // REL-R: warning: {{.*}}:(.nonalloc1+0xa): has non-ABS relocation R_386_PC32 against symbol ''
 
 // RUN: llvm-mc -filetype=obj -triple=x86_64 asm -o b.o
 // RUN: ld.lld -T lds b.o -o b 2>&1 | FileCheck %s --check-prefix=CHECK2 --implicit-check-not=warning:
 // RUN: llvm-objdump -D --no-show-raw-insn b | FileCheck --check-prefix=DISASM %s
-// RUN: ld.lld -T lds -r b.o -o /dev/null --fatal-warnings
+// RUN: ld.lld -T lds -r b.o --fatal-warnings
 // CHECK2:      warning: {{.*}}.o:(.nonalloc1+0x1): has non-ABS relocation R_X86_64_PC32 against symbol '_start'
 // CHECK2-NEXT: warning: {{.*}}.o:(.nonalloc1+0x6): has non-ABS relocation R_X86_64_PC32 against symbol 'ifunc'
 // CHECK2-NEXT: warning: {{.*}}.o:(.nonalloc1+0xa): has non-ABS relocation R_X86_64_PC32 against symbol ''
diff --git a/lld/test/ELF/print-archive-stats.s b/lld/test/ELF/print-archive-stats.s
diff --git a/lld/test/ELF/remap-inputs.test b/lld/test/ELF/remap-inputs.test
diff --git a/lld/test/ELF/reproduce-deplibs.s b/lld/test/ELF/reproduce-deplibs.s
diff --git a/lld/test/ELF/reproduce-lto.s b/lld/test/ELF/reproduce-lto.s
diff --git a/lld/test/ELF/riscv-attributes.s b/lld/test/ELF/riscv-attributes.s
diff --git a/lld/test/ELF/unknown-section.test b/lld/test/ELF/unknown-section.test
diff --git a/lld/test/ELF/why-extract.s b/lld/test/ELF/why-extract.s
