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implement support for CHECK-NEXT: in filecheck.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79123 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner
2009-08-15 18:32:21 +00:00
parent 16b794d25a
commit 5dafafdeb4
3 changed files with 157 additions and 37 deletions
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docs/TestingGuide.html
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@@ -518,14 +518,18 @@ is a "subl" in between those labels. If it existed somewhere else in the file,
that would not count: "grep subl" matches if subl exists anywhere in the
file.</p>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"><a
name="FileCheck-check-prefix">The FileCheck -check-prefix option</a></div>
<div class="doc_text">
<p>The FileCheck -check-prefix option allows multiple test configurations to be
driven from one .ll file. This is useful in many circumstances, for example,
testing different architectural variants with llc. Here's a simple example:</p>
<div class="doc_code">
<pre>
; RUN: llvm-as &lt; %s | llc -mtriple=i686-apple-darwin9 -mattr=sse41 \
@@ -548,6 +552,43 @@ define &lt;4 x i32&gt; @pinsrd_1(i32 %s, &lt;4 x i32&gt; %tmp) nounwind {
<p>In this case, we're testing that we get the expected code generation with
both 32-bit and 64-bit code generation.</p>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"><a
name="FileCheck-CHECK-NEXT">The "CHECK-NEXT:" directive</a></div>
<div class="doc_text">
<p>Sometimes you want to match lines and would like to verify that matches
happen on exactly consequtive lines with no other lines in between them. In
this case, you can use CHECK: and CHECK-NEXT: directives to specify this. If
you specified a custom check prefix, just use "&lt;PREFIX&gt;-NEXT:". For
example, something like this works as you'd expect:</p>
<div class="doc_code">
<pre>
define void @t2(&lt;2 x double&gt;* %r, &lt;2 x double&gt;* %A, double %B) nounwind {
%tmp3 = load &lt;2 x double&gt;* %A, align 16
%tmp7 = insertelement &lt;2 x double&gt; undef, double %B, i32 0
%tmp9 = shufflevector &lt;2 x double&gt; %tmp3, &lt;2 x double&gt; %tmp7, &lt;2 x i32&gt; &lt; i32 0, i32 2 &gt;
store &lt;2 x double&gt; %tmp9, &lt;2 x double&gt;* %r, align 16
ret void
; <b>CHECK:</b> t2:
; <b>CHECK:</b> movl 8(%esp), %eax
; <b>CHECK-NEXT:</b> movapd (%eax), %xmm0
; <b>CHECK-NEXT:</b> movhpd 12(%esp), %xmm0
; <b>CHECK-NEXT:</b> movl 4(%esp), %eax
; <b>CHECK-NEXT:</b> movapd %xmm0, (%eax)
; <b>CHECK-NEXT:</b> ret
}
</pre>
</div>
<p>CHECK-NEXT: directives reject the input unless there is exactly one newline
between it an the previous directive. A CHECK-NEXT cannot be the first
directive in a file.</p>
</div>