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| author | Hal Finkel <hfinkel@anl.gov> | 2013-01-30 23:43:27 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-01-30 23:43:27 +0000 |
| commit | e1df90958d21bfe5b517b1fe7d73c5084026bf1a (patch) | |
| tree | 537b4eb81547bfa22c4644d9960fb6d60a1bb6a7 /llvm/lib/Target/PowerPC/PPCSubtarget.cpp | |
| parent | 785afdf3a48b3f38a0fd30edefc533ca1bf725f9 (diff) | |
| download | llvm-e1df90958d21bfe5b517b1fe7d73c5084026bf1a.zip llvm-e1df90958d21bfe5b517b1fe7d73c5084026bf1a.tar.gz llvm-e1df90958d21bfe5b517b1fe7d73c5084026bf1a.tar.bz2 | |
PPC QPX requires a 32-byte aligned stack
On systems which support the QPX vector instructions, the stack must be
32-byte aligned.
llvm-svn: 173993
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCSubtarget.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCSubtarget.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp index 91beeae..18e4c07 100644 --- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp +++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp @@ -83,6 +83,12 @@ PPCSubtarget::PPCSubtarget(const std::string &TT, const std::string &CPU, // Set up darwin-specific properties. if (isDarwin()) HasLazyResolverStubs = true; + + // QPX requires a 32-byte aligned stack. Note that we need to do this if + // we're compiling for a BG/Q system regardless of whether or not QPX + // is enabled because external functions will assume this alignment. + if (hasQPX() || isBGQ()) + StackAlignment = 32; } /// SetJITMode - This is called to inform the subtarget info that we are |