[llvm] [BOLT][test] Replace /dev/null with temp file (PR #73485)
Amir Ayupov via llvm-commits
llvm-commits at lists.llvm.org
Sun Nov 26 22:53:50 PST 2023
https://github.com/aaupov created https://github.com/llvm/llvm-project/pull/73485
NFC processing time script identifies tests by output filename.
When `/dev/null` is used as output filename, we're unable to tell the
source test, and the reports are unhelpful.
Replace `/dev/null/ with `%t.null` which resolves the issue.
>From 28d587d45cb3d043de01f956ebba6a7a6c584c1b Mon Sep 17 00:00:00 2001
From: Amir Ayupov <aaupov at fb.com>
Date: Sun, 26 Nov 2023 22:49:23 -0800
Subject: [PATCH] [BOLT][test] Replace /dev/null with temp file
NFC processing time script identifies tests by output filename.
When `/dev/null` is used as output filename, we're unable to tell the
source test, and the reports are unhelpful.
Replace `/dev/null/ with `%t.null` which resolves the issue.
---
bolt/test/AArch64/got-ld64-relaxation.test | 2 +-
bolt/test/AArch64/skip-got-rel.test | 2 +-
bolt/test/RISCV/branch-no-secondary-entry.s | 2 +-
bolt/test/RISCV/call-annotations.s | 2 +-
bolt/test/RISCV/load-store.s | 2 +-
bolt/test/RISCV/reloc-abs.s | 2 +-
bolt/test/RISCV/reloc-bb-split.s | 2 +-
bolt/test/RISCV/reloc-branch.s | 2 +-
bolt/test/RISCV/reloc-call.s | 2 +-
bolt/test/RISCV/reloc-got.s | 2 +-
bolt/test/RISCV/reloc-jal.s | 2 +-
bolt/test/RISCV/reloc-lohi.s | 2 +-
bolt/test/RISCV/reloc-pcrel.s | 2 +-
bolt/test/RISCV/reloc-rvc-branch.s | 2 +-
bolt/test/RISCV/reloc-rvc-jump.s | 2 +-
bolt/test/RISCV/reloc-tls.s | 2 +-
bolt/test/X86/block-reordering.test | 2 +-
bolt/test/X86/branch-data.test | 2 +-
bolt/test/X86/bug-function-layout-execount.s | 2 +-
bolt/test/X86/call-zero.s | 2 +-
bolt/test/X86/cfi-instrs-count.s | 2 +-
bolt/test/X86/checkvma-large-section.test | 2 +-
bolt/test/X86/data-to-data-pcrel.s | 2 +-
bolt/test/X86/double-rel.s | 2 +-
bolt/test/X86/exceptions-args.test | 2 +-
bolt/test/X86/fptr-addend-pcrel.s | 2 +-
bolt/test/X86/gotpcrelx.s | 4 ++--
bolt/test/X86/icp-inline.s | 4 ++--
bolt/test/X86/indirect-goto.test | 2 +-
bolt/test/X86/is-strip.s | 2 +-
bolt/test/X86/jmpjmp.test | 2 +-
bolt/test/X86/jump-table-footprint-reduction.test | 2 +-
bolt/test/X86/jump-table-pic-order.test | 2 +-
bolt/test/X86/jump-table-reference.test | 2 +-
bolt/test/X86/layout-heuristic.test | 2 +-
bolt/test/X86/line-number.test | 2 +-
bolt/test/X86/lto-name-match.s | 2 +-
bolt/test/X86/no-entry-reordering.test | 2 +-
bolt/test/X86/no-output.test | 2 +-
bolt/test/X86/pt_gnu_relro.s | 2 +-
bolt/test/X86/reader-stale-yaml.test | 4 ++--
bolt/test/X86/reader.test | 2 +-
bolt/test/X86/sctc-bug.test | 2 +-
bolt/test/X86/sctc-bug2.test | 2 +-
bolt/test/X86/sctc-bug3.test | 2 +-
bolt/test/X86/sctc-bug4.test | 2 +-
bolt/test/X86/section-end-sym.s | 2 +-
bolt/test/X86/tailcall.test | 2 +-
bolt/test/X86/vararg.test | 2 +-
bolt/test/X86/yaml-multiple-profiles.test | 2 +-
bolt/test/bad-exe.test | 2 +-
bolt/test/no-relocs.test | 2 +-
bolt/test/pie.test | 2 +-
bolt/test/re-optimize.test | 2 +-
bolt/test/runtime/X86/asm-dump.c | 4 ++--
bolt/test/yaml-profile-kind.c | 4 ++--
56 files changed, 61 insertions(+), 61 deletions(-)
diff --git a/bolt/test/AArch64/got-ld64-relaxation.test b/bolt/test/AArch64/got-ld64-relaxation.test
index 01c17cb01a65afe..ec6042a2ca8264f 100644
--- a/bolt/test/AArch64/got-ld64-relaxation.test
+++ b/bolt/test/AArch64/got-ld64-relaxation.test
@@ -2,7 +2,7 @@
// to the ADR+ADD sequence is properly recognized and handled by bolt
// RUN: yaml2obj %p/Inputs/got-ld64-relaxation.yaml &> %t.exe
-// RUN: llvm-bolt %t.exe -o /dev/null --print-fix-relaxations \
+// RUN: llvm-bolt %t.exe -o %t.null --print-fix-relaxations \
// RUN: --print-only=main | FileCheck %s
// CHECK: adrp x0, foo
diff --git a/bolt/test/AArch64/skip-got-rel.test b/bolt/test/AArch64/skip-got-rel.test
index 3c36df00b1c82f5..eaa6ec4b78d744d 100644
--- a/bolt/test/AArch64/skip-got-rel.test
+++ b/bolt/test/AArch64/skip-got-rel.test
@@ -3,6 +3,6 @@
// normally.
RUN: yaml2obj %p/Inputs/skip-got-rel.yaml &> %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --print-cfg --print-only=_start | FileCheck %s
+RUN: llvm-bolt %t.exe -o %t.null --print-cfg --print-only=_start | FileCheck %s
CHECK: adr x0, foo2
diff --git a/bolt/test/RISCV/branch-no-secondary-entry.s b/bolt/test/RISCV/branch-no-secondary-entry.s
index bf8191f25744c90..f83ca515791561b 100644
--- a/bolt/test/RISCV/branch-no-secondary-entry.s
+++ b/bolt/test/RISCV/branch-no-secondary-entry.s
@@ -1,7 +1,7 @@
/// Test that no secondary entry points are created for basic block labels used
/// by branches.
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt -print-cfg -o /dev/null %t 2>&1 | FileCheck %s
+// RUN: llvm-bolt -print-cfg -o %t.null %t 2>&1 | FileCheck %s
// CHECK: Binary Function "_start" after building cfg {
// CHECK: IsMultiEntry: 0
diff --git a/bolt/test/RISCV/call-annotations.s b/bolt/test/RISCV/call-annotations.s
index 477c4693cd6dd72..1a8ac1571f0be24 100644
--- a/bolt/test/RISCV/call-annotations.s
+++ b/bolt/test/RISCV/call-annotations.s
@@ -4,7 +4,7 @@
// RUN: llvm-mc -triple riscv64 -mattr=+c -filetype obj -o %t.o %s
// RUN: ld.lld --emit-relocs -o %t %t.o
// RUN: llvm-bolt --enable-bat --print-cfg --print-fix-riscv-calls \
-// RUN: -o /dev/null %t | FileCheck %s
+// RUN: -o %t.null %t | FileCheck %s
.text
.option norvc
diff --git a/bolt/test/RISCV/load-store.s b/bolt/test/RISCV/load-store.s
index 5a9785571c80811..052c5a3879a449f 100644
--- a/bolt/test/RISCV/load-store.s
+++ b/bolt/test/RISCV/load-store.s
@@ -1,6 +1,6 @@
// RUN: %clang %cflags -o %t %s
// RUN: link_fdata --no-lbr %s %t %t.fdata
-// RUN: llvm-bolt %t -o /dev/null --data=%t.fdata --dyno-stats | FileCheck %s
+// RUN: llvm-bolt %t -o %t.null --data=%t.fdata --dyno-stats | FileCheck %s
// CHECK: BOLT-INFO: program-wide dynostats after all optimizations before SCTC and FOP (no change):
// CHECK: 3000 : executed instructions
diff --git a/bolt/test/RISCV/reloc-abs.s b/bolt/test/RISCV/reloc-abs.s
index 5b728f092b3c9f5..956e0410ece42ab 100644
--- a/bolt/test/RISCV/reloc-abs.s
+++ b/bolt/test/RISCV/reloc-abs.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -Wl,--defsym='__global_pointer$'=0x2800 -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.data
diff --git a/bolt/test/RISCV/reloc-bb-split.s b/bolt/test/RISCV/reloc-bb-split.s
index 5995562cf130b07..450c76394452949 100644
--- a/bolt/test/RISCV/reloc-bb-split.s
+++ b/bolt/test/RISCV/reloc-bb-split.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.data
diff --git a/bolt/test/RISCV/reloc-branch.s b/bolt/test/RISCV/reloc-branch.s
index 43991149af8c809..6a8b5a28e19d920 100644
--- a/bolt/test/RISCV/reloc-branch.s
+++ b/bolt/test/RISCV/reloc-branch.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.text
diff --git a/bolt/test/RISCV/reloc-call.s b/bolt/test/RISCV/reloc-call.s
index 8c7f5498c292559..37cfd993b95d2b9 100644
--- a/bolt/test/RISCV/reloc-call.s
+++ b/bolt/test/RISCV/reloc-call.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-fix-riscv-calls --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-fix-riscv-calls --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.text
diff --git a/bolt/test/RISCV/reloc-got.s b/bolt/test/RISCV/reloc-got.s
index dcf9d0ea3ffbf23..e7e85fddfb1cb9e 100644
--- a/bolt/test/RISCV/reloc-got.s
+++ b/bolt/test/RISCV/reloc-got.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.data
diff --git a/bolt/test/RISCV/reloc-jal.s b/bolt/test/RISCV/reloc-jal.s
index 427e8f230d89a4e..ce54265fac05e90 100644
--- a/bolt/test/RISCV/reloc-jal.s
+++ b/bolt/test/RISCV/reloc-jal.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.text
diff --git a/bolt/test/RISCV/reloc-lohi.s b/bolt/test/RISCV/reloc-lohi.s
index a97a1454eee8620..c882df0be61d968 100644
--- a/bolt/test/RISCV/reloc-lohi.s
+++ b/bolt/test/RISCV/reloc-lohi.s
@@ -1,6 +1,6 @@
// RUN: llvm-mc -triple riscv64 -filetype=obj -o %t.o %s
// RUN: ld.lld -q -o %t %t.o
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.data
diff --git a/bolt/test/RISCV/reloc-pcrel.s b/bolt/test/RISCV/reloc-pcrel.s
index 3ad3015a0a57fad..c7e41747b4db95b 100644
--- a/bolt/test/RISCV/reloc-pcrel.s
+++ b/bolt/test/RISCV/reloc-pcrel.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.data
diff --git a/bolt/test/RISCV/reloc-rvc-branch.s b/bolt/test/RISCV/reloc-rvc-branch.s
index 34221c167d86517..87c16d8023faf51 100644
--- a/bolt/test/RISCV/reloc-rvc-branch.s
+++ b/bolt/test/RISCV/reloc-rvc-branch.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.text
diff --git a/bolt/test/RISCV/reloc-rvc-jump.s b/bolt/test/RISCV/reloc-rvc-jump.s
index 21b10bab09c7cdf..2aae9c3c8e8e578 100644
--- a/bolt/test/RISCV/reloc-rvc-jump.s
+++ b/bolt/test/RISCV/reloc-rvc-jump.s
@@ -1,5 +1,5 @@
// RUN: %clang %cflags -o %t %s
-// RUN: llvm-bolt --print-cfg --print-only=_start -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=_start -o %t.null %t \
// RUN: | FileCheck %s
.text
diff --git a/bolt/test/RISCV/reloc-tls.s b/bolt/test/RISCV/reloc-tls.s
index 44195818277f546..a4c7bd06de907ce 100644
--- a/bolt/test/RISCV/reloc-tls.s
+++ b/bolt/test/RISCV/reloc-tls.s
@@ -1,6 +1,6 @@
// RUN: llvm-mc -triple riscv64 -filetype obj -o %t.o %s
// RUN: ld.lld --emit-relocs -o %t %t.o
-// RUN: llvm-bolt --print-cfg --print-only=tls_le,tls_ie -o /dev/null %t \
+// RUN: llvm-bolt --print-cfg --print-only=tls_le,tls_ie -o %t.null %t \
// RUN: | FileCheck %s
// CHECK-LABEL: Binary Function "tls_le{{.*}}" after building cfg {
diff --git a/bolt/test/X86/block-reordering.test b/bolt/test/X86/block-reordering.test
index a18a2109d37e274..f3a3390e27cb97e 100644
--- a/bolt/test/X86/block-reordering.test
+++ b/bolt/test/X86/block-reordering.test
@@ -2,7 +2,7 @@
# according to the new function layout.
RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --data %p/Inputs/blarge.fdata \
+RUN: llvm-bolt %t.exe -o %t.null --data %p/Inputs/blarge.fdata \
RUN: --reorder-blocks=normal --print-finalized 2>&1 | FileCheck %s \
RUN: --check-prefix=CHECK
diff --git a/bolt/test/X86/branch-data.test b/bolt/test/X86/branch-data.test
index 5d6ff92d18e28b0..0c64caaee8a50b0 100644
--- a/bolt/test/X86/branch-data.test
+++ b/bolt/test/X86/branch-data.test
@@ -3,7 +3,7 @@
# Also checks that llvm-bolt disassembler and CFG builder is working properly.
RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --data %p/Inputs/blarge.fdata --print-cfg | FileCheck %s
+RUN: llvm-bolt %t.exe -o %t.null --data %p/Inputs/blarge.fdata --print-cfg | FileCheck %s
CHECK: Binary Function "usqrt"
CHECK: State : CFG constructed
diff --git a/bolt/test/X86/bug-function-layout-execount.s b/bolt/test/X86/bug-function-layout-execount.s
index 540b6790d01e900..c88e4d0043b4633 100644
--- a/bolt/test/X86/bug-function-layout-execount.s
+++ b/bolt/test/X86/bug-function-layout-execount.s
@@ -6,7 +6,7 @@
# RUN: link_fdata %s %t.o %t.fdata
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe --data %t.fdata --lite --reorder-functions=exec-count \
-# RUN: -v=2 --debug-only=hfsort -o /dev/null 2>&1 | FileCheck %s
+# RUN: -v=2 --debug-only=hfsort -o %t.null 2>&1 | FileCheck %s
# CHECK: Starting pass: reorder-functions
# CHECK-NEXT: hot func func2 (1500)
diff --git a/bolt/test/X86/call-zero.s b/bolt/test/X86/call-zero.s
index 3644bf5d962d054..3d6308d9e6f837b 100644
--- a/bolt/test/X86/call-zero.s
+++ b/bolt/test/X86/call-zero.s
@@ -2,7 +2,7 @@
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
# RUN: %clang %cflags %t.o -o %t.exe
-# RUN: llvm-bolt %t.exe -o /dev/null -v=2 2>&1 | FileCheck %s
+# RUN: llvm-bolt %t.exe -o %t.null -v=2 2>&1 | FileCheck %s
# CHECK: Function main has a call to address zero.
.text
diff --git a/bolt/test/X86/cfi-instrs-count.s b/bolt/test/X86/cfi-instrs-count.s
index adf28a9e0811f35..635d560ae753359 100644
--- a/bolt/test/X86/cfi-instrs-count.s
+++ b/bolt/test/X86/cfi-instrs-count.s
@@ -3,7 +3,7 @@
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %s -o %t.o
# RUN: %clang %cflags %t.o -o %t.exe
-# RUN: llvm-bolt %t.exe -o /dev/null --print-cfg 2>&1 | FileCheck %s
+# RUN: llvm-bolt %t.exe -o %t.null --print-cfg 2>&1 | FileCheck %s
#
# CHECK: Binary Function "_Z7catchitv" after building cfg {
# CHECK: CFI Instrs : 6
diff --git a/bolt/test/X86/checkvma-large-section.test b/bolt/test/X86/checkvma-large-section.test
index afa44111ead49e5..89aa4f78d52d12a 100644
--- a/bolt/test/X86/checkvma-large-section.test
+++ b/bolt/test/X86/checkvma-large-section.test
@@ -2,7 +2,7 @@
REQUIRES: asserts
RUN: split-file %s %t
RUN: yaml2obj %t/yaml -o %t.exe --max-size=0
-RUN: llvm-bolt %t.exe -o /dev/null --allow-stripped
+RUN: llvm-bolt %t.exe -o %t.null --allow-stripped
#--- yaml
--- !ELF
FileHeader:
diff --git a/bolt/test/X86/data-to-data-pcrel.s b/bolt/test/X86/data-to-data-pcrel.s
index 256682655d6d37c..00b5bf83e25dbf5 100644
--- a/bolt/test/X86/data-to-data-pcrel.s
+++ b/bolt/test/X86/data-to-data-pcrel.s
@@ -4,7 +4,7 @@
# RUN: llvm-strip --strip-unneeded %t.o
# RUN: ld.lld %t.o -o %t.exe -q --unresolved-symbols=ignore-all
# RUN: llvm-readelf -Wr %t.exe | FileCheck %s
-# RUN: llvm-bolt --strict %t.exe --relocs -o /dev/null
+# RUN: llvm-bolt --strict %t.exe --relocs -o %t.null
.text
.globl _start
diff --git a/bolt/test/X86/double-rel.s b/bolt/test/X86/double-rel.s
index 7de842d9dd3187b..f7754f77e782b74 100644
--- a/bolt/test/X86/double-rel.s
+++ b/bolt/test/X86/double-rel.s
@@ -6,7 +6,7 @@
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
# RUN: ld.lld %t.o -o %t.exe -q --Tdata=0x80000
-# RUN: llvm-bolt %t.exe --relocs -o /dev/null --print-only=_start --print-disasm \
+# RUN: llvm-bolt %t.exe --relocs -o %t.null --print-only=_start --print-disasm \
# RUN: | FileCheck %s --check-prefix=CHECK-BOLT
# RUN: llvm-objdump -d --print-imm-hex %t.exe \
# RUN: | FileCheck %s --check-prefix=CHECK-OBJDUMP
diff --git a/bolt/test/X86/exceptions-args.test b/bolt/test/X86/exceptions-args.test
index fe9423896f68d91..3a4fa2f0eac13b3 100644
--- a/bolt/test/X86/exceptions-args.test
+++ b/bolt/test/X86/exceptions-args.test
@@ -3,7 +3,7 @@
RUN: %clang %cflags %p/../Inputs/stub.c -fPIC -pie -shared -o %t.so
RUN: %clangxx %cxxflags -no-pie %p/Inputs/exc_args.s -o %t %t.so -Wl,-z,notext
-RUN: llvm-bolt %t -o /dev/null --print-finalized --print-only=main | FileCheck %s
+RUN: llvm-bolt %t -o %t.null --print-finalized --print-only=main | FileCheck %s
CHECK: Binary Function "main" after finalize-functions
CHECK: callq _Z3fooiiiiiiii {{.*}} GNU_args_size = 16
diff --git a/bolt/test/X86/fptr-addend-pcrel.s b/bolt/test/X86/fptr-addend-pcrel.s
index 0e84a8fd36004d4..054d177ed55fe01 100644
--- a/bolt/test/X86/fptr-addend-pcrel.s
+++ b/bolt/test/X86/fptr-addend-pcrel.s
@@ -6,7 +6,7 @@
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
# RUN: llvm-strip --strip-unneeded %t.o
# RUN: ld.lld %t.o -o %t.exe -q
-# RUN: llvm-bolt %t.exe --relocs -o /dev/null --print-only=foo --print-disasm \
+# RUN: llvm-bolt %t.exe --relocs -o %t.null --print-only=foo --print-disasm \
# RUN: | FileCheck %s
.text
diff --git a/bolt/test/X86/gotpcrelx.s b/bolt/test/X86/gotpcrelx.s
index 090a433143156dc..ddac5ebda0caf0c 100644
--- a/bolt/test/X86/gotpcrelx.s
+++ b/bolt/test/X86/gotpcrelx.s
@@ -12,9 +12,9 @@
# RUN: ld.lld %t.o -o %t.no-relax.exe -q --no-relax
# RUN: llvm-bolt %t.exe --relocs -o %t.out --print-cfg --print-only=_start \
# RUN: |& FileCheck --check-prefix=BOLT %s
-# RUN: llvm-bolt %t.pie.exe -o /dev/null --print-cfg --print-only=_start \
+# RUN: llvm-bolt %t.pie.exe -o %t.null --print-cfg --print-only=_start \
# RUN: |& FileCheck --check-prefix=PIE-BOLT %s
-# RUN: llvm-bolt %t.no-relax.exe -o /dev/null --print-cfg --print-only=_start \
+# RUN: llvm-bolt %t.no-relax.exe -o %t.null --print-cfg --print-only=_start \
# RUN: |& FileCheck --check-prefix=NO-RELAX-BOLT %s
# RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex \
# RUN: %t.out | FileCheck --check-prefix=DISASM %s
diff --git a/bolt/test/X86/icp-inline.s b/bolt/test/X86/icp-inline.s
index 318318f96215c26..3c863833449fa6e 100644
--- a/bolt/test/X86/icp-inline.s
+++ b/bolt/test/X86/icp-inline.s
@@ -20,7 +20,7 @@
# Without -icp-inline option, ICP is performed
# RUN: llvm-bolt %t.exe --icp=calls --icp-calls-topn=1 --inline-small-functions\
-# RUN: -o /dev/null --lite=0 \
+# RUN: -o %t.null --lite=0 \
# RUN: --inline-small-functions-bytes=4 --print-icp --data %t.fdata \
# RUN: | FileCheck %s --check-prefix=CHECK-NO-ICP-INLINE
# CHECK-NO-ICP-INLINE: Binary Function "main" after indirect-call-promotion
@@ -29,7 +29,7 @@
# With -icp-inline option, ICP is not performed (size of bar > inline threshold)
# RUN: llvm-bolt %t.exe --icp=calls --icp-calls-topn=1 --inline-small-functions\
-# RUN: -o /dev/null --lite=0 \
+# RUN: -o %t.null --lite=0 \
# RUN: --inline-small-functions-bytes=4 --icp-inline --print-icp \
# RUN: --data %t.fdata | FileCheck %s --check-prefix=CHECK-ICP-INLINE
# CHECK-ICP-INLINE: Binary Function "main" after indirect-call-promotion
diff --git a/bolt/test/X86/indirect-goto.test b/bolt/test/X86/indirect-goto.test
index e2565ff889327aa..bbc11e7d3317154 100644
--- a/bolt/test/X86/indirect-goto.test
+++ b/bolt/test/X86/indirect-goto.test
@@ -1,6 +1,6 @@
# Check llvm-bolt processes binaries compiled from sources that use indirect goto.
RUN: %clang %cflags -no-pie %S/Inputs/indirect_goto.c -Wl,-q -o %t
-RUN: llvm-bolt %t -o /dev/null --relocs=1 --print-cfg --print-only=main \
+RUN: llvm-bolt %t -o %t.null --relocs=1 --print-cfg --print-only=main \
RUN: --strict \
RUN: 2>&1 | FileCheck %s
diff --git a/bolt/test/X86/is-strip.s b/bolt/test/X86/is-strip.s
index dca7b03a61380f7..df12986efc42d72 100644
--- a/bolt/test/X86/is-strip.s
+++ b/bolt/test/X86/is-strip.s
@@ -4,7 +4,7 @@
# RUN: llvm-bolt %t -o %t.out 2>&1 | FileCheck %s -check-prefix=CHECK-NOSTRIP
# RUN: cp %t %t.stripped
# RUN: llvm-strip -s %t.stripped
-# RUN: not llvm-bolt %t.stripped -o /dev/null 2>&1 | FileCheck %s -check-prefix=CHECK-STRIP
+# RUN: not llvm-bolt %t.stripped -o %t.null 2>&1 | FileCheck %s -check-prefix=CHECK-STRIP
# RUN: llvm-bolt %t.stripped -o %t.out --allow-stripped 2>&1 | FileCheck %s -check-prefix=CHECK-NOSTRIP
# CHECK-NOSTRIP-NOT: BOLT-ERROR: stripped binaries are not supported.
diff --git a/bolt/test/X86/jmpjmp.test b/bolt/test/X86/jmpjmp.test
index b512001c3c44643..cc6107f47812757 100644
--- a/bolt/test/X86/jmpjmp.test
+++ b/bolt/test/X86/jmpjmp.test
@@ -3,7 +3,7 @@
RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %S/Inputs/jmpjmp.s -o %t.o
RUN: %clang %cflags %t.o -o %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --print-cfg 2>&1 | FileCheck %s
+RUN: llvm-bolt %t.exe -o %t.null --print-cfg 2>&1 | FileCheck %s
CHECK: Binary Function "testfunc"
CHECK: State : CFG constructed
diff --git a/bolt/test/X86/jump-table-footprint-reduction.test b/bolt/test/X86/jump-table-footprint-reduction.test
index 5a007c626eca898..4e0f9b16818d3f8 100644
--- a/bolt/test/X86/jump-table-footprint-reduction.test
+++ b/bolt/test/X86/jump-table-footprint-reduction.test
@@ -6,7 +6,7 @@ RUN: %S/Inputs/jump_table_footprint_reduction.s -o %t.o
RUN: link_fdata %S/Inputs/jump_table_footprint_reduction.s %t.o %t.fdata --nmtool llvm-nm
RUN: llvm-strip --strip-unneeded %t.o
RUN: %clang %cflags -no-pie %t.o -o %t.exe -Wl,-q
-RUN: llvm-bolt %t.exe --data %t.fdata -o /dev/null \
+RUN: llvm-bolt %t.exe --data %t.fdata -o %t.null \
RUN: --jump-tables=move --jt-footprint-reduction --assume-abi --relocs \
RUN: | FileCheck %s
diff --git a/bolt/test/X86/jump-table-pic-order.test b/bolt/test/X86/jump-table-pic-order.test
index 0206e831f2441d8..59c0af252b07b39 100644
--- a/bolt/test/X86/jump-table-pic-order.test
+++ b/bolt/test/X86/jump-table-pic-order.test
@@ -2,7 +2,7 @@
# in the same order as they appear in the input code.
RUN: %clang %cflags %S/Inputs/jump-table-pic.s -o %t.exe -Wl,-q
-RUN: llvm-bolt %t.exe --strict --print-cfg --print-only=main -o /dev/null \
+RUN: llvm-bolt %t.exe --strict --print-cfg --print-only=main -o %t.null \
RUN: | FileCheck %s
CHECK: BB Layout : {{.*, .*, .*,}} [[BB4to6:.*, .*, .*]]
diff --git a/bolt/test/X86/jump-table-reference.test b/bolt/test/X86/jump-table-reference.test
index 6a019b26cf63d60..9d33c0d5e72718e 100644
--- a/bolt/test/X86/jump-table-reference.test
+++ b/bolt/test/X86/jump-table-reference.test
@@ -1,6 +1,6 @@
# Verifies that BOLT detects fixed destination of indirect jump
RUN: %clang %cflags -no-pie %S/Inputs/jump_table_reference.s -Wl,-q -o %t
-RUN: llvm-bolt %t --relocs -o /dev/null 2>&1 | FileCheck %s
+RUN: llvm-bolt %t --relocs -o %t.null 2>&1 | FileCheck %s
CHECK: BOLT-INFO: fixed indirect branch detected in main
diff --git a/bolt/test/X86/layout-heuristic.test b/bolt/test/X86/layout-heuristic.test
index bec0ef01c85f697..3d24e1aad139a5f 100644
--- a/bolt/test/X86/layout-heuristic.test
+++ b/bolt/test/X86/layout-heuristic.test
@@ -5,7 +5,7 @@
# Also checks that llvm-bolt disassembler and CFG builder is working properly.
RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --data %p/Inputs/blarge.fdata \
+RUN: llvm-bolt %t.exe -o %t.null --data %p/Inputs/blarge.fdata \
RUN: --reorder-blocks=normal --print-cfg --print-reordered \
RUN: --funcs=main,SolveCubic,usqrt --sequential-disassembly \
RUN: 2>&1 | FileCheck %s
diff --git a/bolt/test/X86/line-number.test b/bolt/test/X86/line-number.test
index 9c9d98df2f1db66..b039962643d4064 100644
--- a/bolt/test/X86/line-number.test
+++ b/bolt/test/X86/line-number.test
@@ -1,7 +1,7 @@
# Verifies that the extraction of DWARF line number information is correct.
RUN: %clangxx %cxxflags %S/Inputs/linenumber.cpp -g -o %t
-RUN: llvm-bolt %t -o /dev/null --print-reordered --update-debug-sections \
+RUN: llvm-bolt %t -o %t.null --print-reordered --update-debug-sections \
RUN: --print-debug-info --reorder-blocks=reverse --sequential-disassembly \
RUN: 2>&1 | FileCheck %s
diff --git a/bolt/test/X86/lto-name-match.s b/bolt/test/X86/lto-name-match.s
index 32d2e0ae40dbed6..92aad7d5ec62c32 100644
--- a/bolt/test/X86/lto-name-match.s
+++ b/bolt/test/X86/lto-name-match.s
@@ -2,7 +2,7 @@
# RUN: link_fdata %s %t.o %t.fdata
# RUN: llvm-strip --strip-unneeded %t.o
# RUN: %clang %cflags %t.o -o %t.exe
-# RUN: llvm-bolt %t.exe --data %t.fdata -o /dev/null | FileCheck %s
+# RUN: llvm-bolt %t.exe --data %t.fdata -o %t.null | FileCheck %s
## Check that profile is correctly matched by functions with variable suffixes.
## E.g., LTO-generated name foo.llvm.123 should match foo.llvm.*.
diff --git a/bolt/test/X86/no-entry-reordering.test b/bolt/test/X86/no-entry-reordering.test
index 8f2e2c41a4c3490..a2638e1388c9a72 100644
--- a/bolt/test/X86/no-entry-reordering.test
+++ b/bolt/test/X86/no-entry-reordering.test
@@ -5,7 +5,7 @@ RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %S/Inputs/entry.s -o %
RUN: link_fdata %S/Inputs/entry.s %t.o %t.fdata --nmtool llvm-nm
RUN: llvm-strip --strip-unneeded %t.o
RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
-RUN: llvm-bolt %t.exe --data %t.fdata -o /dev/null --reorder-blocks=normal \
+RUN: llvm-bolt %t.exe --data %t.fdata -o %t.null --reorder-blocks=normal \
RUN: --funcs=_start --print-reordered --sequential-disassembly | FileCheck %s
CHECK: BB Layout : .LBB00, {{.*}}
diff --git a/bolt/test/X86/no-output.test b/bolt/test/X86/no-output.test
index 523bdf25f52175f..173c4f9cc4b3113 100644
--- a/bolt/test/X86/no-output.test
+++ b/bolt/test/X86/no-output.test
@@ -7,7 +7,7 @@
# RUN: link_fdata %s %t.o %t.fdata
# RUN: llvm-strip --strip-unneeded %t.o
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
-# RUN: llvm-bolt %t.exe --print-profile-stats -o /dev/null \
+# RUN: llvm-bolt %t.exe --print-profile-stats -o %t.null \
# RUN: --data %t.fdata | FileCheck %s
.text
diff --git a/bolt/test/X86/pt_gnu_relro.s b/bolt/test/X86/pt_gnu_relro.s
index 4d5c2b527188f17..ad8d475c83724b6 100644
--- a/bolt/test/X86/pt_gnu_relro.s
+++ b/bolt/test/X86/pt_gnu_relro.s
@@ -21,7 +21,7 @@
# READELF: Section to Segment mapping:
# READELF: 04 .got
-# RUN: llvm-bolt %t.exe --relocs -o /dev/null -v=1 \
+# RUN: llvm-bolt %t.exe --relocs -o %t.null -v=1 \
# RUN: |& FileCheck --check-prefix=BOLT %s
# BOLT: BOLT-INFO: marking .got as GNU_RELRO
diff --git a/bolt/test/X86/reader-stale-yaml.test b/bolt/test/X86/reader-stale-yaml.test
index 5231032f4f4a75d..4127e92b59d3f97 100644
--- a/bolt/test/X86/reader-stale-yaml.test
+++ b/bolt/test/X86/reader-stale-yaml.test
@@ -3,11 +3,11 @@
RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
# Testing "usqrt"
-RUN: llvm-bolt %t.exe -o /dev/null --b %p/Inputs/blarge_profile_stale.yaml \
+RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
RUN: --print-cfg --print-only=usqrt --infer-stale-profile=1 \
RUN: --profile-ignore-hash=1 --profile-use-dfs=0 2>&1 | FileCheck %s -check-prefix=CHECK1
# Testing "SolveCubic"
-RUN: llvm-bolt %t.exe -o /dev/null --b %p/Inputs/blarge_profile_stale.yaml \
+RUN: llvm-bolt %t.exe -o %t.null --b %p/Inputs/blarge_profile_stale.yaml \
RUN: --print-cfg --print-only=SolveCubic --infer-stale-profile=1 \
RUN: --profile-ignore-hash=1 --profile-use-dfs=0 2>&1 | FileCheck %s -check-prefix=CHECK2
diff --git a/bolt/test/X86/reader.test b/bolt/test/X86/reader.test
index cc0bfe43511d341..308b97e30bb5602 100644
--- a/bolt/test/X86/reader.test
+++ b/bolt/test/X86/reader.test
@@ -1,7 +1,7 @@
# This script checks that DataReader in llvm-bolt is reading data correctly
RUN: yaml2obj %p/Inputs/blarge.yaml &> %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --data %p/Inputs/blarge.fdata --dump-data \
+RUN: llvm-bolt %t.exe -o %t.null --data %p/Inputs/blarge.fdata --dump-data \
RUN: 2>&1 | sort | FileCheck %s -check-prefix=CHECK
CHECK: main 1105 SolveCubic 0 0 151
diff --git a/bolt/test/X86/sctc-bug.test b/bolt/test/X86/sctc-bug.test
index a4568aca14144ac..1b581df23749033 100644
--- a/bolt/test/X86/sctc-bug.test
+++ b/bolt/test/X86/sctc-bug.test
@@ -1,7 +1,7 @@
# Check that we don't accidentally optimize out a tail call.
RUN: %clang %cflags %S/Inputs/sctc_bug.s -o %t
-RUN: llvm-bolt %t -o /dev/null --funcs=main --print-after-lowering \
+RUN: llvm-bolt %t -o %t.null --funcs=main --print-after-lowering \
RUN: 2>&1 | FileCheck %s
CHECK: jp .L{{.*}}
diff --git a/bolt/test/X86/sctc-bug2.test b/bolt/test/X86/sctc-bug2.test
index cf23b38249ace34..0e235564dc3bd99 100644
--- a/bolt/test/X86/sctc-bug2.test
+++ b/bolt/test/X86/sctc-bug2.test
@@ -1,7 +1,7 @@
# Check that conditional tail call is not treated as a regular tail call by SCTC.
RUN: %clang %cflags %S/Inputs/sctc_bug2.s -o %t
-RUN: llvm-bolt %t -o /dev/null --funcs=main --print-after-lowering \
+RUN: llvm-bolt %t -o %t.null --funcs=main --print-after-lowering \
RUN: --sequential-disassembly 2>&1 | FileCheck %s
CHECK: .LFT1
diff --git a/bolt/test/X86/sctc-bug3.test b/bolt/test/X86/sctc-bug3.test
index fce69bf86a4660d..69c8c454284445d 100644
--- a/bolt/test/X86/sctc-bug3.test
+++ b/bolt/test/X86/sctc-bug3.test
@@ -1,7 +1,7 @@
# Check that we don't accidentally optimize out a tail call.
RUN: %clang %cflags %S/Inputs/sctc_bug3.s -o %t
-RUN: llvm-bolt %t -o /dev/null --funcs=main --print-after-lowering \
+RUN: llvm-bolt %t -o %t.null --funcs=main --print-after-lowering \
RUN: --sequential-disassembly 2>&1 | FileCheck %s
CHECK: .LBB00 (1 instructions, align : 1)
diff --git a/bolt/test/X86/sctc-bug4.test b/bolt/test/X86/sctc-bug4.test
index b449be1b33892f0..00f5ee429b635e0 100644
--- a/bolt/test/X86/sctc-bug4.test
+++ b/bolt/test/X86/sctc-bug4.test
@@ -1,7 +1,7 @@
# Check that fallthrough blocks are handled properly.
RUN: %clang %cflags %S/Inputs/sctc_bug4.s -o %t
-RUN: llvm-bolt %t -o /dev/null \
+RUN: llvm-bolt %t -o %t.null \
RUN: -funcs=test_func -print-sctc -sequential-disassembly 2>&1 | FileCheck %s
CHECK: .Ltmp2 (3 instructions, align : 1)
diff --git a/bolt/test/X86/section-end-sym.s b/bolt/test/X86/section-end-sym.s
index cf1723c2563ae36..545cf37263da56f 100644
--- a/bolt/test/X86/section-end-sym.s
+++ b/bolt/test/X86/section-end-sym.s
@@ -5,7 +5,7 @@
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t.o
# RUN: ld.lld %t.o -o %t.exe -q
-# RUN: llvm-bolt %t.exe -o /dev/null --print-cfg --debug-only=bolt 2>&1 \
+# RUN: llvm-bolt %t.exe -o %t.null --print-cfg --debug-only=bolt 2>&1 \
# RUN: | FileCheck %s
# CHECK: considering symbol etext for function
diff --git a/bolt/test/X86/tailcall.test b/bolt/test/X86/tailcall.test
index 09a31a6016078ec..83b69bd25ab922a 100644
--- a/bolt/test/X86/tailcall.test
+++ b/bolt/test/X86/tailcall.test
@@ -2,7 +2,7 @@
# in control flow graph.
RUN: %clang %cflags %S/Inputs/tailcall.s -o %t.exe
-RUN: llvm-bolt %t.exe -o /dev/null --print-cfg 2>&1 | FileCheck %s
+RUN: llvm-bolt %t.exe -o %t.null --print-cfg 2>&1 | FileCheck %s
CHECK: Binary Function "foo"
CHECK: jmp bar # TAILCALL
diff --git a/bolt/test/X86/vararg.test b/bolt/test/X86/vararg.test
index bfbc23efb9dcd95..5df4f3da0421469 100644
--- a/bolt/test/X86/vararg.test
+++ b/bolt/test/X86/vararg.test
@@ -5,7 +5,7 @@
REQUIRES: x86_64-linux
RUN: %clangxx %cxxflags -no-pie %p/../Inputs/vararg.s -o %t -Wl,-q
-RUN: llvm-bolt %t -o /dev/null --print-cfg --print-only=.*printf.* |& FileCheck %s
+RUN: llvm-bolt %t -o %t.null --print-cfg --print-only=.*printf.* |& FileCheck %s
CHECK: IsSimple : 0
CHECK: Entry Point
diff --git a/bolt/test/X86/yaml-multiple-profiles.test b/bolt/test/X86/yaml-multiple-profiles.test
index d94f8dec02f14ba..5684da4226be62f 100644
--- a/bolt/test/X86/yaml-multiple-profiles.test
+++ b/bolt/test/X86/yaml-multiple-profiles.test
@@ -5,7 +5,7 @@
# RUN: split-file %s %t
# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown %t/main.s -o %t.o
# RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
-# RUN: llvm-bolt %t.exe -o /dev/null --data %t/profile.yaml \
+# RUN: llvm-bolt %t.exe -o %t.null --data %t/profile.yaml \
# RUN: --profile-ignore-hash -v=1 2>&1 | FileCheck %s
# CHECK: BOLT-WARNING: dropping duplicate profile for main_alias(*2)
#--- main.s
diff --git a/bolt/test/bad-exe.test b/bolt/test/bad-exe.test
index 6c1d8cc58dad0f6..fadc5590ea86f3c 100644
--- a/bolt/test/bad-exe.test
+++ b/bolt/test/bad-exe.test
@@ -7,6 +7,6 @@ REQUIRES: system-linux
RUN: %clang %cflags %S/Inputs/icf-jump-tables.c -g -o %t
RUN: llvm-objcopy --only-keep-debug %t %t.debuginfo
-RUN: not llvm-bolt %t.debuginfo -o /dev/null 2>&1 | FileCheck %s
+RUN: not llvm-bolt %t.debuginfo -o %t.null 2>&1 | FileCheck %s
CHECK: input binary is not a valid ELF executable
diff --git a/bolt/test/no-relocs.test b/bolt/test/no-relocs.test
index 9e22705081e6b72..34993eb330cbdd7 100644
--- a/bolt/test/no-relocs.test
+++ b/bolt/test/no-relocs.test
@@ -5,6 +5,6 @@
REQUIRES: system-linux
RUN: %clang %cflags %S/Inputs/icf-jump-tables.c -o %t
-RUN: not llvm-bolt %t -o /dev/null --relocs 2>&1 | FileCheck %s
+RUN: not llvm-bolt %t -o %t.null --relocs 2>&1 | FileCheck %s
CHECK: BOLT-ERROR: relocations against code are missing from the input file.
diff --git a/bolt/test/pie.test b/bolt/test/pie.test
index e8aaa91b7de7dd7..0ce2576ee401c0b 100644
--- a/bolt/test/pie.test
+++ b/bolt/test/pie.test
@@ -5,6 +5,6 @@
REQUIRES: system-linux
RUN: %clang %cflags -fPIC -pie %p/Inputs/jump_table_icp.cpp -o %t
-RUN: llvm-bolt %t -o /dev/null 2>&1 | FileCheck %s
+RUN: llvm-bolt %t -o %t.null 2>&1 | FileCheck %s
CHECK: BOLT-INFO: shared object or position-independent executable detected
diff --git a/bolt/test/re-optimize.test b/bolt/test/re-optimize.test
index 38f3cf9131aa06e..2c436d708df82c1 100644
--- a/bolt/test/re-optimize.test
+++ b/bolt/test/re-optimize.test
@@ -5,7 +5,7 @@
REQUIRES: system-linux
RUN: %clang %cflags %S/Inputs/icf-jump-tables.c -o %t.exe
-RUN: llvm-bolt %t.exe -o %t 2>&1 > /dev/null
+RUN: llvm-bolt %t.exe -o %t 2>&1 > %t.null
RUN: not llvm-bolt %t -o %t.bolt 2>&1 | FileCheck %s
CHECK: BOLT-ERROR: input file was processed by BOLT. Cannot re-optimize.
diff --git a/bolt/test/runtime/X86/asm-dump.c b/bolt/test/runtime/X86/asm-dump.c
index fdd448e0c408ddb..e5383b523515944 100644
--- a/bolt/test/runtime/X86/asm-dump.c
+++ b/bolt/test/runtime/X86/asm-dump.c
@@ -14,7 +14,7 @@
* RUN: %t.instr > %t.result
*
* Run BOLT with asm-dump
- * RUN: llvm-bolt %t.exe -p %t.fdata --funcs=main --asm-dump=%t -o /dev/null \
+ * RUN: llvm-bolt %t.exe -p %t.fdata --funcs=main --asm-dump=%t -o %t.null \
* RUN: | FileCheck %s --check-prefix=CHECK-BOLT
*
* Check asm file contents
@@ -42,7 +42,7 @@
* RUN: %clang -fPIC %t.o -o %t.exe.reopt -Wl,-q
*
* Finally consume reoptimized file with reconstructed fdata
- * RUN: llvm-bolt %t.exe.reopt -p %t.fdata.reconst -o /dev/null \
+ * RUN: llvm-bolt %t.exe.reopt -p %t.fdata.reconst -o %t.null \
* RUN: | FileCheck %s --check-prefix=CHECK-REOPT
*
* CHECK-BOLT: BOLT-INFO: Dumping function assembly to {{.*}}/main.s
diff --git a/bolt/test/yaml-profile-kind.c b/bolt/test/yaml-profile-kind.c
index b7983c672c74804..3bf2a2619f01f42 100644
--- a/bolt/test/yaml-profile-kind.c
+++ b/bolt/test/yaml-profile-kind.c
@@ -1,10 +1,10 @@
/* This test checks the handling of YAML profile with different block orders.
# RUN: %clang %cflags %s -o %t.exe
# RUN: link_fdata %s %t.exe %t.fdata
-# RUN: llvm-bolt %t.exe -o /dev/null -data %t.fdata -w %t.yaml
+# RUN: llvm-bolt %t.exe -o %t.null -data %t.fdata -w %t.yaml
# RUN: FileCheck %s --input-file %t.yaml --check-prefix=CHECK-BINARY
# CHECK-BINARY: dfs-order: false
-# RUN: llvm-bolt %t.exe -o /dev/null -data %t.fdata -w %t.yaml --profile-use-dfs
+# RUN: llvm-bolt %t.exe -o %t.null -data %t.fdata -w %t.yaml --profile-use-dfs
# RUN: FileCheck %s --input-file %t.yaml --check-prefix=CHECK-DFS
# CHECK-DFS: dfs-order: true
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