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llvm-project/clang/test/CodeGen/arm-long-calls.c

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[ARM] Pass subtarget feature "+long-calls" instead of passing backend option "-arm-long-calls". This change allows using -mlong-calls/-mno-long-calls for LTO and enabling or disabling long call on a per-function basis. rdar://problem/21529937 Differential Revision: http://reviews.llvm.org/D9414 llvm-svn: 241565
2015-07-07 14:42:05 +08:00
// RUN: %clang_cc1 -triple thumbv7-apple-ios5 -target-feature +long-calls -emit-llvm -o - %s | FileCheck -check-prefix=LONGCALL %s
// RUN: %clang_cc1 -triple thumbv7-apple-ios5 -emit-llvm -o - %s | FileCheck -check-prefix=NOLONGCALL %s
[ARM] Compute a target feature which corresponds to the ARM version. Currently, the interaction between the triple, the CPU, and the supported features is a mess: the driver edits the triple to indicate the supported architecture version, and the LLVM backend uses this to figure out what instructions are legal. This makes it difficult to understand what's happening, and makes it impossible to LTO together two modules with different computed architectures. Instead of relying on triple rewriting to get the correct target features, we should add the right target features explicitly. Differential Revision: https://reviews.llvm.org/D45240 llvm-svn: 330169
2018-04-17 07:52:58 +08:00
// LONGCALL: attributes #0 = { {{.*}} "target-features"="+armv7-a,+long-calls,+thumb-mode"
// NOLONGCALL-NOT: attributes #0 = { {{.*}} "target-features"="+armv7-a,+long-calls,+thumb-mode"
[ARM] Pass subtarget feature "+long-calls" instead of passing backend option "-arm-long-calls". This change allows using -mlong-calls/-mno-long-calls for LTO and enabling or disabling long call on a per-function basis. rdar://problem/21529937 Differential Revision: http://reviews.llvm.org/D9414 llvm-svn: 241565
2015-07-07 14:42:05 +08:00
int foo1(int a) { return a; }