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| author | Duncan Sands <baldrick@free.fr> | 2009-01-31 15:50:11 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2009-01-31 15:50:11 +0000 |
| commit | 92abc62399881ba9c525be80362c134ad836e2d9 (patch) | |
| tree | 596a2370bbd0b6c4279966b6885420abb878ae13 /test/CodeGen/X86/2009-01-31-BigShift2.ll | |
| parent | d1b5e3fad94d4a5203c0a355aa7d37c01abaca8c (diff) | |
| download | llvm-92abc62399881ba9c525be80362c134ad836e2d9.tar.gz llvm-92abc62399881ba9c525be80362c134ad836e2d9.tar.bz2 llvm-92abc62399881ba9c525be80362c134ad836e2d9.tar.xz | |
Fix PR3401: when using large integers, the type
returned by getShiftAmountTy may be too small
to hold shift values (it is an i8 on x86-32).
Before and during type legalization, use a large
but legal type for shift amounts: getPointerTy;
afterwards use getShiftAmountTy, fixing up any
shift amounts with a big type during operation
legalization. Thanks to Dan for writing the
original patch (which I shamelessly pillaged).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63482 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/2009-01-31-BigShift2.ll')
| -rw-r--r-- | test/CodeGen/X86/2009-01-31-BigShift2.ll | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/test/CodeGen/X86/2009-01-31-BigShift2.ll b/test/CodeGen/X86/2009-01-31-BigShift2.ll new file mode 100644 index 0000000000..2b5b189578 --- /dev/null +++ b/test/CodeGen/X86/2009-01-31-BigShift2.ll @@ -0,0 +1,11 @@ +; RUN: llvm-as < %s | llc -march=x86 | grep {mov.*56} +; PR3449 + +define void @test(<8 x double>* %P, i64* %Q) nounwind { + %A = load <8 x double>* %P ; <<8 x double>> [#uses=1] + %B = bitcast <8 x double> %A to i512 ; <i512> [#uses=1] + %C = lshr i512 %B, 448 ; <i512> [#uses=1] + %D = trunc i512 %C to i64 ; <i64> [#uses=1] + volatile store i64 %D, i64* %Q + ret void +} |