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Diffstat (limited to 'docs/tutorial/LangImpl3.html')
| -rw-r--r-- | docs/tutorial/LangImpl3.html | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/docs/tutorial/LangImpl3.html b/docs/tutorial/LangImpl3.html index aab7faa70c..831c7c1d50 100644 --- a/docs/tutorial/LangImpl3.html +++ b/docs/tutorial/LangImpl3.html @@ -170,7 +170,7 @@ internally (<tt>APFloat</tt> has the capability of holding floating point constants of <em>A</em>rbitrary <em>P</em>recision). This code basically just creates and returns a <tt>ConstantFP</tt>. Note that in the LLVM IR that constants are all uniqued together and shared. For this reason, the API -uses "the Context.get..." idiom instead of "new foo(..)" or "foo::Create(..)".</p> +uses the "foo::get(...)" idiom instead of "new foo(..)" or "foo::Create(..)".</p> <div class="doc_code"> <pre> @@ -323,10 +323,10 @@ really talks about the external interface for a function (not the value computed by an expression), it makes sense for it to return the LLVM Function it corresponds to when codegen'd.</p> -<p>The call to <tt>Context.get</tt> creates +<p>The call to <tt>FunctionType::get</tt> creates the <tt>FunctionType</tt> that should be used for a given Prototype. Since all function arguments in Kaleidoscope are of type double, the first line creates -a vector of "N" LLVM double types. It then uses the <tt>Context.get</tt> +a vector of "N" LLVM double types. It then uses the <tt>Functiontype::get</tt> method to create a function type that takes "N" doubles as arguments, returns one double as a result, and that is not vararg (the false parameter indicates this). Note that Types in LLVM are uniqued just like Constants are, so you @@ -535,8 +535,7 @@ ready> <b>4+5</b>; Read top-level expression: define double @""() { entry: - %addtmp = add double 4.000000e+00, 5.000000e+00 - ret double %addtmp + ret double 9.000000e+00 } </pre> </div> @@ -544,7 +543,8 @@ entry: <p>Note how the parser turns the top-level expression into anonymous functions for us. This will be handy when we add <a href="LangImpl4.html#jit">JIT support</a> in the next chapter. Also note that the code is very literally -transcribed, no optimizations are being performed. We will +transcribed, no optimizations are being performed except simple constant +folding done by IRBuilder. We will <a href="LangImpl4.html#trivialconstfold">add optimizations</a> explicitly in the next chapter.</p> @@ -554,12 +554,12 @@ ready> <b>def foo(a b) a*a + 2*a*b + b*b;</b> Read function definition: define double @foo(double %a, double %b) { entry: - %multmp = mul double %a, %a - %multmp1 = mul double 2.000000e+00, %a - %multmp2 = mul double %multmp1, %b - %addtmp = add double %multmp, %multmp2 - %multmp3 = mul double %b, %b - %addtmp4 = add double %addtmp, %multmp3 + %multmp = fmul double %a, %a + %multmp1 = fmul double 2.000000e+00, %a + %multmp2 = fmul double %multmp1, %b + %addtmp = fadd double %multmp, %multmp2 + %multmp3 = fmul double %b, %b + %addtmp4 = fadd double %addtmp, %multmp3 ret double %addtmp4 } </pre> @@ -576,7 +576,7 @@ define double @bar(double %a) { entry: %calltmp = call double @foo( double %a, double 4.000000e+00 ) %calltmp1 = call double @bar( double 3.133700e+04 ) - %addtmp = add double %calltmp, %calltmp1 + %addtmp = fadd double %calltmp, %calltmp1 ret double %addtmp } </pre> @@ -612,18 +612,18 @@ ready> <b>^D</b> define double @""() { entry: - %addtmp = add double 4.000000e+00, 5.000000e+00 + %addtmp = fadd double 4.000000e+00, 5.000000e+00 ret double %addtmp } define double @foo(double %a, double %b) { entry: - %multmp = mul double %a, %a - %multmp1 = mul double 2.000000e+00, %a - %multmp2 = mul double %multmp1, %b - %addtmp = add double %multmp, %multmp2 - %multmp3 = mul double %b, %b - %addtmp4 = add double %addtmp, %multmp3 + %multmp = fmul double %a, %a + %multmp1 = fmul double 2.000000e+00, %a + %multmp2 = fmul double %multmp1, %b + %addtmp = fadd double %multmp, %multmp2 + %multmp3 = fmul double %b, %b + %addtmp4 = fadd double %addtmp, %multmp3 ret double %addtmp4 } @@ -631,7 +631,7 @@ define double @bar(double %a) { entry: %calltmp = call double @foo( double %a, double 4.000000e+00 ) %calltmp1 = call double @bar( double 3.133700e+04 ) - %addtmp = add double %calltmp, %calltmp1 + %addtmp = fadd double %calltmp, %calltmp1 ret double %addtmp } @@ -1263,7 +1263,7 @@ int main() { <a href="mailto:sabre@nondot.org">Chris Lattner</a><br> <a href="http://llvm.org">The LLVM Compiler Infrastructure</a><br> - Last modified: $Date: 2010-02-03 09:27:31 -0800 (Wed, 03 Feb 2010) $ + Last modified: $Date: 2010-03-02 09:11:08 +0800 (二, 02 3月 2010) $ </address> </body> </html> |