e74a7a9fd7
When multiple actions are specified, the last one is used and others are overridden. This might lead to confusion if the user is used to driver's `-S -emit-llvm` behavior. ``` %clang_cc1 -S -emit-llvm a.c # -S is overridden %clang_cc1 -emit-llvm -S a.c # -emit-llvm is overridden %clang_cc1 -fsyntax-only -S a.c # -fsyntax-only is overridden ``` However, we want to continue supporting overriding the driver action with -Xclang: * `clang -c -Xclang -ast-dump a.c` (`%clang -cc1 -emit-obj ... -main-file-name a.c ... -ast-dump`) * `clang -c -xc++ -Xclang -emit-module stl.modulemap` As an exception, we allow -ast-dump* options to be composed together (e.g. `-ast-dump -ast-dump-lookups` in AST/ast-dump-lookups.cpp).
8 lines
492 B
C
8 lines
492 B
C
// RUN: not %clang_cc1 -S -emit-llvm -main-file-name %s 2>&1 | FileCheck %s --check-prefix=ERR1 --implicit-check-not=error:
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// ERR1: error: '-S' action ignored; '-emit-llvm' action specified previously
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// RUN: not %clang_cc1 -main-file-name %s -emit-llvm-only -emit-llvm -S 2>&1 | FileCheck %s --check-prefix=ERR2 --implicit-check-not=error:
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// ERR2: error: '-emit-llvm-only' action ignored; '-S' action specified previously
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// RUN: %clang_cc1 -S -main-file-name %s -emit-llvm -o /dev/null
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