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[tools] add -help option for opt. #7002

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Nov 16, 2024
Merged

[tools] add -help option for opt. #7002

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5c716c4
[tools] add -help option for opt.
python3kgae Nov 6, 2024
7d60335
chore: autopublish 2024-11-07T18:54:11Z
github-actions[bot] Nov 7, 2024
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5 changes: 5 additions & 0 deletions test/HLSL/opt/help.ll
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
; RUN: opt -help | FileCheck %s

; Make sure the help message is printed.
; CHECK: -O1
; CHECK-SAME: - Optimization level 1. Similar to clang -O1
10 changes: 10 additions & 0 deletions tools/opt/opt.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -128,6 +128,10 @@ StandardLinkOpts("std-link-opts",
cl::desc("Include the standard link time optimizations"));
#endif // HLSL Change Ends

// HLSL Change Starts: add help option.
static cl::opt<bool> Help("help", cl::desc("Print help"));
// HLSL Change Ends

static cl::opt<bool>
OptLevelO1("O1",
cl::desc("Optimization level 1. Similar to clang -O1"));
Expand Down Expand Up @@ -383,6 +387,12 @@ int __cdecl main(int argc, char **argv) {

cl::ParseCommandLineOptions(argc, argv,
"llvm .bc -> .bc modular optimizer and analysis printer\n");
// HLSL Change Starts: add help option.
if (Help) {
cl::PrintHelpMessage();
return 2;
}
// HLSL Change Ends

if (AnalyzeOnly && NoOutput) {
errs() << argv[0] << ": analyze mode conflicts with no-output mode.\n";
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