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[RISCV] Explicitly set an empty --sysroot in the test 

In rL341655 we added additional behaviour to the Driver for riscv32-unknown-elf
when the sysroot is empty.

The new tests that check the new behaviour expect that the absence of --sysroot
in the command-line implies that the sysroot empty. This doesn't hold if clang
is built with a non-empty DEFAULT_SYSROOT in cmake. When this is the case, this
test fails.

Since the new behaviour is triggered when the sysroot is empty, pass an empty
--sysroot to avoid using the default (if any).

Differential Revision: https://reviews.llvm.org/D51972



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@342060 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Roger Ferrer Ibanez 2018-09-12 15:55:14 +00:00
parent d2ada3f873
commit 2e989bf873
1 changed files with 2 additions and 0 deletions
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2
test/Driver/riscv32-toolchain.c
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@ -21,6 +21,7 @@
// RUN: %clang %s -### -no-canonical-prefixes \
// RUN: -target riscv32-unknown-elf \
// RUN: --sysroot= \
// RUN: --gcc-toolchain=%S/Inputs/basic_riscv32_tree 2>&1 \
// RUN: | FileCheck -check-prefix=C-RV32-BAREMETAL-NOSYSROOT-ILP32 %s
@ -52,6 +53,7 @@
// RUN: %clangxx %s -### -no-canonical-prefixes \
// RUN: -target riscv32-unknown-elf -stdlib=libstdc++ \
// RUN: --sysroot= \
// RUN: --gcc-toolchain=%S/Inputs/basic_riscv32_tree 2>&1 \
// RUN: | FileCheck -check-prefix=CXX-RV32-BAREMETAL-NOSYSROOT-ILP32 %s