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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-06 18:15:23 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-09-06 18:15:23 +0000 |
| commit | 45c5c57179e8b4938042431f8e12c9bfad67b3c8 (patch) | |
| tree | 028a8ab9a6720b6c1fe6c9b3a8b3eadbc531a428 /test/CodeGen/PowerPC | |
| parent | e617ccb80da76821379bbff4a2fdcd09e8401e8b (diff) | |
| download | external_llvm-45c5c57179e8b4938042431f8e12c9bfad67b3c8.zip external_llvm-45c5c57179e8b4938042431f8e12c9bfad67b3c8.tar.gz external_llvm-45c5c57179e8b4938042431f8e12c9bfad67b3c8.tar.bz2 | |
Allow overlaps between virtreg and physreg live ranges.
The RegisterCoalescer understands overlapping live ranges where one
register is defined as a copy of the other. With this change, register
allocators using LiveRegMatrix can do the same, at least for copies
between physical and virtual registers.
When a physreg is defined by a copy from a virtreg, allow those live
ranges to overlap:
%CL<def> = COPY %vreg11:sub_8bit; GR32_ABCD:%vreg11
%vreg13<def,tied1> = SAR32rCL %vreg13<tied0>, %CL<imp-use,kill>
We can assign %vreg11 to %ECX, overlapping the live range of %CL.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163336 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/PowerPC')
| -rw-r--r-- | test/CodeGen/PowerPC/2010-03-09-indirect-call.ll | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/test/CodeGen/PowerPC/2010-03-09-indirect-call.ll b/test/CodeGen/PowerPC/2010-03-09-indirect-call.ll index 0003a17..b95ac68 100644 --- a/test/CodeGen/PowerPC/2010-03-09-indirect-call.ll +++ b/test/CodeGen/PowerPC/2010-03-09-indirect-call.ll @@ -9,9 +9,8 @@ target triple = "powerpc-apple-darwin11.0" define void @foo() nounwind ssp { entry: -; Better: mtctr r12 -; CHECK: mr r12, [[REG:r[0-9]+]] -; CHECK: mtctr [[REG]] +; CHECK: mtctr r12 +; CHECK: bctrl %0 = load void (...)** @p, align 4 ; <void (...)*> [#uses=1] call void (...)* %0() nounwind br label %return |