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more intuitive left shift and right shift operators

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Before:
 * << is left shift, not allowed to shift 1 bits out
 * <<% is left shift, allowed to shift 1 bits out
 * >> is right shift, allowed to shift 1 bits out

After:
 * << is left shift, allowed to shift 1 bits out
 * >> is right shift, allowed to shift 1 bits out
 * @shlExact is left shift, not allowed to shift 1 bits out
 * @shrExact is right shift, not allowed to shift 1 bits out

Closes #413
This commit is contained in:
Andrew Kelley
2017-08-09 10:09:38 -04:00
parent 54675b060a
commit 35d3444e27
28 changed files with 274 additions and 128 deletions
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15
src/zig_llvm.cpp
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@@ -754,9 +754,22 @@ LLVMValueRef ZigLLVMBuildNSWShl(LLVMBuilderRef builder, LLVMValueRef LHS, LLVMVa
LLVMValueRef ZigLLVMBuildNUWShl(LLVMBuilderRef builder, LLVMValueRef LHS, LLVMValueRef RHS,
const char *name)
{
return wrap(unwrap(builder)->CreateShl(unwrap(LHS), unwrap(RHS), name, false, true));
return wrap(unwrap(builder)->CreateShl(unwrap(LHS), unwrap(RHS), name, true, false));
}
LLVMValueRef ZigLLVMBuildLShrExact(LLVMBuilderRef builder, LLVMValueRef LHS, LLVMValueRef RHS,
const char *name)
{
return wrap(unwrap(builder)->CreateLShr(unwrap(LHS), unwrap(RHS), name, true));
}
LLVMValueRef ZigLLVMBuildAShrExact(LLVMBuilderRef builder, LLVMValueRef LHS, LLVMValueRef RHS,
const char *name)
{
return wrap(unwrap(builder)->CreateAShr(unwrap(LHS), unwrap(RHS), name, true));
}
#include "buffer.hpp"
bool ZigLLDLink(ZigLLVM_ObjectFormatType oformat, const char **args, size_t arg_count, Buf *diag_buf) {