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llvm-project/clang/test/Driver/riscv-features.c

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[RISCV] Add the RISCV target and compiler driver As RV64 codegen has not yet been upstreamed into LLVM, we focus on RV32 driver support (RV64 to follow). Differential Revision: https://reviews.llvm.org/D39963 llvm-svn: 322276
2018-01-11 21:36:56 +08:00
// RUN: %clang -target riscv32-unknown-elf -### %s -fsyntax-only 2>&1 | FileCheck %s
// RUN: %clang -target riscv64-unknown-elf -### %s -fsyntax-only 2>&1 | FileCheck %s
// CHECK: fno-signed-char
[RISCV] Add -mrelax/-mno-relax flags to enable/disable RISCV linker relaxation Differential Revision: https://reviews.llvm.org/D44888 llvm-svn: 333385
2018-05-29 08:44:15 +08:00
[RISC-V] Add -msave-restore and -mno-save-restore to clang driver Summary: The GCC RISC-V toolchain accepts `-msave-restore` and `-mno-save-restore` to control whether libcalls are used for saving and restoring the stack within prologues and epilogues. Clang currently errors if someone passes -msave-restore or -mno-save-restore. This means that people need to change build configurations to use clang. This patch adds these flags, so that clang invocations can now match gcc. As the RISC-V backend does not currently have a `save-restore` target feature, we emit a warning if someone requests `-msave-restore`. LLVM does not error if we pass the (unimplemented) target features `+save-restore` or `-save-restore`. Reviewers: asb, luismarques Reviewed By: asb Subscribers: rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D63498 llvm-svn: 364018
2019-06-21 18:03:31 +08:00
// RUN: %clang -target riscv32-unknown-elf -### %s 2>&1 | FileCheck %s -check-prefix=DEFAULT
[RISCV] Add -mrelax/-mno-relax flags to enable/disable RISCV linker relaxation Differential Revision: https://reviews.llvm.org/D44888 llvm-svn: 333385
2018-05-29 08:44:15 +08:00
// RUN: %clang -target riscv32-unknown-elf -### %s -mrelax 2>&1 | FileCheck %s -check-prefix=RELAX
// RUN: %clang -target riscv32-unknown-elf -### %s -mno-relax 2>&1 | FileCheck %s -check-prefix=NO-RELAX
// RELAX: "-target-feature" "+relax"
// NO-RELAX: "-target-feature" "-relax"
[RISCV] Default enable RISCV linker relaxation Differential Revision: https://reviews.llvm.org/D47127 llvm-svn: 354222
2019-02-18 00:05:51 +08:00
// DEFAULT: "-target-feature" "+relax"
[RISCV] Add -mrelax/-mno-relax flags to enable/disable RISCV linker relaxation Differential Revision: https://reviews.llvm.org/D44888 llvm-svn: 333385
2018-05-29 08:44:15 +08:00
// DEFAULT-NOT: "-target-feature" "-relax"
[RISC-V] Add -msave-restore and -mno-save-restore to clang driver Summary: The GCC RISC-V toolchain accepts `-msave-restore` and `-mno-save-restore` to control whether libcalls are used for saving and restoring the stack within prologues and epilogues. Clang currently errors if someone passes -msave-restore or -mno-save-restore. This means that people need to change build configurations to use clang. This patch adds these flags, so that clang invocations can now match gcc. As the RISC-V backend does not currently have a `save-restore` target feature, we emit a warning if someone requests `-msave-restore`. LLVM does not error if we pass the (unimplemented) target features `+save-restore` or `-save-restore`. Reviewers: asb, luismarques Reviewed By: asb Subscribers: rbar, johnrusso, simoncook, apazos, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D63498 llvm-svn: 364018
2019-06-21 18:03:31 +08:00
// RUN: %clang -target riscv32-unknown-elf -### %s -msave-restore 2>&1 | FileCheck %s -check-prefix=SAVE-RESTORE
// RUN: %clang -target riscv32-unknown-elf -### %s -mno-save-restore 2>&1 | FileCheck %s -check-prefix=NO-SAVE-RESTORE
[RISCV] Add support for save/restore of callee-saved registers via libcalls This patch adds the support required for using the __riscv_save and __riscv_restore libcalls to implement a size-optimization for prologue and epilogue code, whereby the spill and restore code of callee-saved registers is implemented by common functions to reduce code duplication. Logic is also included to ensure that if both this optimization and shrink wrapping are enabled then the prologue and epilogue code can be safely inserted into the basic blocks chosen by shrink wrapping. Differential Revision: https://reviews.llvm.org/D62686
2020-02-12 05:23:03 +08:00
// SAVE-RESTORE: "-target-feature" "+save-restore"
// NO-SAVE-RESTORE: "-target-feature" "-save-restore"
// DEFAULT: "-target-feature" "-save-restore"
// DEFAULT-NOT: "-target-feature" "+save-restore"
[RISCV] Make -march=rv{32,64}gc the default in RISC-V Linux This is the logical follow-up of D65634. Differential Revision: https://reviews.llvm.org/D66003 llvm-svn: 371496
2019-09-10 16:16:24 +08:00
// RUN: %clang -target riscv32-linux -### %s -fsyntax-only 2>&1 \
// RUN: | FileCheck %s -check-prefix=DEFAULT-LINUX
// RUN: %clang -target riscv64-linux -### %s -fsyntax-only 2>&1 \
// RUN: | FileCheck %s -check-prefix=DEFAULT-LINUX
// DEFAULT-LINUX: "-target-feature" "+m"
// DEFAULT-LINUX-SAME: "-target-feature" "+a"
// DEFAULT-LINUX-SAME: "-target-feature" "+f"
// DEFAULT-LINUX-SAME: "-target-feature" "+d"
// DEFAULT-LINUX-SAME: "-target-feature" "+c"