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author | Tom Stellard <thomas.stellard@amd.com> | 2014-05-15 20:55:58 +0000 |
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committer | Tom Stellard <thomas.stellard@amd.com> | 2014-05-15 20:55:58 +0000 |
commit | ffecacb1a1eeca8ca8567057c3c886161837d2a6 (patch) | |
tree | 69d6bcb1b49ee7dc0b3b1d0c6f2ebe6f31d366b4 /lib | |
parent | e47eb279d50f38374a3f5b95a8c4bcc2112ed408 (diff) | |
download | llvm-ffecacb1a1eeca8ca8567057c3c886161837d2a6.tar.gz llvm-ffecacb1a1eeca8ca8567057c3c886161837d2a6.tar.bz2 llvm-ffecacb1a1eeca8ca8567057c3c886161837d2a6.tar.xz |
Merging r208501:
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r208501 | hfinkel | 2014-05-11 12:23:29 -0400 (Sun, 11 May 2014) | 9 lines
[PowerPC] On PPC32, 128-bit shifts might be runtime calls
The counter-loops formation pass needs to know what operations might be
function calls (because they can't appear in counter-based loops). On PPC32,
128-bit shifts might be runtime calls (even though you can't use __int128 on
PPC32, it seems that SROA might form them).
Fixes PR19709.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@208916 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r-- | lib/Target/PowerPC/PPCCTRLoops.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCCTRLoops.cpp b/lib/Target/PowerPC/PPCCTRLoops.cpp index e419b9b40d..819635c5d8 100644 --- a/lib/Target/PowerPC/PPCCTRLoops.cpp +++ b/lib/Target/PowerPC/PPCCTRLoops.cpp @@ -369,6 +369,14 @@ bool PPCCTRLoops::mightUseCTR(const Triple &TT, BasicBlock *BB) { J->getOpcode() == Instruction::URem || J->getOpcode() == Instruction::SRem)) { return true; + } else if (TT.isArch32Bit() && + isLargeIntegerTy(false, J->getType()->getScalarType()) && + (J->getOpcode() == Instruction::Shl || + J->getOpcode() == Instruction::AShr || + J->getOpcode() == Instruction::LShr)) { + // Only on PPC32, for 128-bit integers (specifically not 64-bit + // integers), these might be runtime calls. + return true; } else if (isa<IndirectBrInst>(J) || isa<InvokeInst>(J)) { // On PowerPC, indirect jumps use the counter register. return true; |