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| author | Tomasz Miąsko <tomasz.miasko@gmail.com> | 2022-09-09 00:00:00 +0000 |
|---|---|---|
| committer | Tomasz Miąsko <tomasz.miasko@gmail.com> | 2022-09-09 15:54:14 +0200 |
| commit | 72791061666c45e830dade2445354a6f60699d69 (patch) | |
| tree | f45a4677c2e931e0fe07191131df949eb3be91ea /compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp | |
| parent | 98f3001eecbe4cbd091c10ffab45b4c164bb507b (diff) | |
| download | rust-72791061666c45e830dade2445354a6f60699d69.tar.gz rust-72791061666c45e830dade2445354a6f60699d69.zip | |
Introduce a fallible variant of LLVMConstIntGetZExtValue
which verifies that a constant bit width is within 64 bits or fails.
Diffstat (limited to 'compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp')
| -rw-r--r-- | compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp index 931ce78721c..6ee3c7d6821 100644 --- a/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp +++ b/compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp @@ -1618,6 +1618,14 @@ extern "C" LLVMValueRef LLVMRustConstInBoundsGEP2(LLVMTypeRef Ty, return wrap(ConstantExpr::getInBoundsGetElementPtr(unwrap(Ty), Val, IdxList)); } +extern "C" bool LLVMRustConstIntGetZExtValue(LLVMValueRef CV, uint64_t *value) { + auto C = unwrap<llvm::ConstantInt>(CV); + if (C->getBitWidth() > 64) + return false; + *value = C->getZExtValue(); + return true; +} + // Returns true if both high and low were successfully set. Fails in case constant wasn’t any of // the common sizes (1, 8, 16, 32, 64, 128 bits) extern "C" bool LLVMRustConstInt128Get(LLVMValueRef CV, bool sext, uint64_t *high, uint64_t *low) |