253a294b54
In NewPM pass managers, add a "pretty stack frame" that tells you which pass crashed while running which function. For example `opt -O3 -passes-ep-peephole=trigger-crash-function test.ll` will print something like this: ``` Stack dump: 0. Program arguments: build/bin/opt -S -O3 -passes-ep-peephole=trigger-crash-function test.ll 1. Running pass "function<eager-inv>(mem2reg,instcombine<max-iterations=1;no-use-loop-info;no-verify-fixpoint>,trigger-crash-function,simplifycfg<bonus-inst-threshold=1;no-forward-switch-cond;switch-range-to-icmp;no-switch-to-lookup;keep-loops;no-hoist-common-insts;no-sink-common-insts;speculate-blocks;simplify-cond-branch>)" on module "test.ll" 2. Running pass "trigger-crash-function" on function "fshl_concat_i8_i8" ``` While the crashing pass is usually evident from the stack trace, this also shows which function triggered the crash, as well as the pipeline string for the pass (including options). Similar functionality existed in the LegacyPM.
34 lines
1.6 KiB
LLVM
34 lines
1.6 KiB
LLVM
; A test that the hidden option -print-on-crash properly sets a signal handler
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; which gets called when a pass crashes. The trigger-crash-module pass asserts.
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; RUN: not --crash opt -print-on-crash -passes=trigger-crash-module < %s 2>&1 | FileCheck %s --check-prefix=CHECK_SIMPLE
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; RUN: not --crash opt -print-on-crash-path=%t -passes=trigger-crash-module < %s
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; RUN: FileCheck %s --check-prefix=CHECK_SIMPLE --input-file=%t
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; A test that the signal handler set by the hidden option -print-on-crash
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; is not called when no pass crashes.
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; RUN: opt -disable-output -print-on-crash -passes="default<O2>" < %s 2>&1 | FileCheck %s --check-prefix=CHECK_NO_CRASH --allow-empty
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; RUN: not --crash opt -print-on-crash -print-module-scope -passes=trigger-crash-module < %s 2>&1 | FileCheck %s --check-prefix=CHECK_MODULE
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; RUN: not --crash opt -print-on-crash -print-module-scope -passes=trigger-crash-module -filter-passes=trigger-crash-module < %s 2>&1 | FileCheck %s --check-prefix=CHECK_MODULE
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; RUN: not --crash opt -print-on-crash -print-module-scope -passes=trigger-crash-module -filter-passes=blah < %s 2>&1 | FileCheck %s --check-prefix=CHECK_FILTERED
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; CHECK_SIMPLE: *** Dump of IR Before Last Pass {{.*}} Started ***
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; CHECK_SIMPLE: @main
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; CHECK_SIMPLE: entry:
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; CHECK_NO_CRASH-NOT: *** Dump of IR
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; CHECK_MODULE: *** Dump of Module IR Before Last Pass {{.*}} Started ***
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; CHECK_MODULE: ; ModuleID = {{.*}}
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; CHECK_FILTERED: *** Dump of Module IR Before Last Pass {{.*}} Filtered Out ***
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define i32 @main() {
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entry:
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%retval = alloca i32, align 4
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store i32 0, ptr %retval, align 4
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ret i32 0
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}
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