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| author | Dan Gohman <dan433584@gmail.com> | 2015-12-16 23:25:51 +0000 |
|---|---|---|
| committer | Dan Gohman <dan433584@gmail.com> | 2015-12-16 23:25:51 +0000 |
| commit | 417295381308b9af6e431d3ceb42b4770969bc96 (patch) | |
| tree | 94bc9ba9015450b497e82a27ccb82d672d76a609 /llvm/lib/Target/WebAssembly | |
| parent | 38dcc9e355094a3fc5f2c81c074696d5e01d0de8 (diff) | |
| download | bcm5719-llvm-417295381308b9af6e431d3ceb42b4770969bc96.tar.gz bcm5719-llvm-417295381308b9af6e431d3ceb42b4770969bc96.zip | |
[WebAssembly] Fix legalization of shift operators on large integer types.
llvm-svn: 255847
Diffstat (limited to 'llvm/lib/Target/WebAssembly')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp index 2364366f3f5..ed7cb1909d9 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyISelLowering.cpp @@ -207,6 +207,13 @@ MVT WebAssemblyTargetLowering::getScalarShiftAmountTy(const DataLayout & /*DL*/, unsigned BitWidth = NextPowerOf2(VT.getSizeInBits() - 1); if (BitWidth > 1 && BitWidth < 8) BitWidth = 8; + + if (BitWidth > 64) { + BitWidth = 64; + assert(BitWidth >= Log2_32_Ceil(VT.getSizeInBits()) && + "64-bit shift counts ought to be enough for anyone"); + } + MVT Result = MVT::getIntegerVT(BitWidth); assert(Result != MVT::INVALID_SIMPLE_VALUE_TYPE && "Unable to represent scalar shift amount type"); |
