PowerPC: Do not use llc -march in tests.

`llc -march` is problematic because it only switches the target
architecture, but leaves the operating system unchanged. This
occasionally leads to indeterministic tests because the OS from
LLVM_DEFAULT_TARGET_TRIPLE is used.

However we can simply always use `llc -mtriple` instead. This changes
all the tests to do this to avoid people using -march when they copy and
paste parts of tests.

This patch:
- Removes -march if the .ll file already has a matching `target triple`
  directive or -mtriple argument.
- In all other cases changes -march=ppc32/-march=ppc64 to
  -mtriple=ppc32--/-mtriple=ppc64--

See also the discussion in https://reviews.llvm.org/D35287

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@309754 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 2 insertions, 2 deletions

diff --git a/test/CodeGen/PowerPC/sign_ext_inreg1.ll b/test/CodeGen/PowerPC/sign_ext_inreg1.ll
index fc037ace1ec..ffb53802c8f 100644
--- a/test/CodeGen/PowerPC/sign_ext_inreg1.ll
+++ b/test/CodeGen/PowerPC/sign_ext_inreg1.ll
@@ -1,5 +1,5 @@
-; RUN: llc -verify-machineinstrs < %s -march=ppc32 | grep srwi
-; RUN: llc -verify-machineinstrs < %s -march=ppc32 | not grep rlwimi
+; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- | grep srwi
+; RUN: llc -verify-machineinstrs < %s -mtriple=ppc32-- | not grep rlwimi
 
 define i32 @baz(i64 %a) {
         %tmp29 = lshr i64 %a, 24                ; <i64> [#uses=1]