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TheRock/compiler/amd-llvm/lld/test/ELF/dtlto/timetrace.test
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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REQUIRES: x86
## Test that DTLTO-specific LTO input file handling time-trace output is
## produced as expected.
RUN: rm -rf %t && split-file %s %t && cd %t
RUN: sed 's/@t1/@t2/g' t1.ll > t2.ll
## Generate ThinLTO bitcode files.
RUN: opt -thinlto-bc t1.ll -o t1.bc
RUN: opt -thinlto-bc t2.ll -o t2.bc
## Create archives.
RUN: llvm-ar rcs t1.a t1.bc
RUN: llvm-ar rcsT t2.thin.a t2.bc
## Generate object files for mock.py to return.
RUN: llc t1.ll --filetype=obj -o t1.o
RUN: llc t2.ll --filetype=obj -o t2.o
## Link and generate a time-trace.
## Note: mock.py doesn't compile; it copies the specified object files to the
## outputs in job order.
RUN: ld.lld --whole-archive t1.a t2.thin.a -o my.elf \
RUN: --thinlto-distributor=%python \
RUN: --thinlto-distributor-arg=%llvm_src_root/utils/dtlto/mock.py \
RUN: --thinlto-distributor-arg=t1.o --thinlto-distributor-arg=t2.o \
RUN: --time-trace-granularity=0 --time-trace=%t.json
RUN: %python filter_order_and_pprint.py %t.json | FileCheck %s
## Check that DTLTO add input file events are recorded.
CHECK: "name": "Add input for DTLTO"
CHECK: "name": "Add input for DTLTO"
CHECK: "name": "Remove DTLTO temporary files"
CHECK: "name": "Serialize bitcode input for DTLTO"
CHECK-SAME: "detail": "t1.a(t1.bc at [[#ARCHIVE_OFFSET:]]).1.[[PID:[A-F0-9]+]].o"
CHECK: "name": "Total Add input for DTLTO"
CHECK-SAME: "count": 2,
CHECK: "name": "Total Remove DTLTO temporary files"
CHECK-SAME: "count": 1,
CHECK: "name": "Total Serialize bitcode input for DTLTO"
CHECK-SAME: "count": 1,
#--- t1.ll
target triple = "x86_64-unknown-linux-gnu"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
define void @t1() {
ret void
}
#--- filter_order_and_pprint.py
import json, sys
data = json.load(open(sys.argv[1], "r", encoding="utf-8"))
# Get DTLTO events.
events = [e for e in data["traceEvents"] if "DTLTO" in e["name"]]
events.sort(key=lambda e: (e["name"], str(e.get("args", {}).get("detail", ""))))
# Print an event per line. Ensure 'name' is the first key.
for ev in events:
name = ev.pop("name")
print(json.dumps({"name": name, **ev}))