92c17c34de
Review URL: http://codereview.chromium.org/119081 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2097 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
92 lines
2.9 KiB
JavaScript
92 lines
2.9 KiB
JavaScript
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Test the paths in the code generator where values in specific
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// registers get moved around so that the shift operation can use
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// register ECX on ia32 for the shift amount. Other codegen coverage
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// tests should go here too.
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function identity(x) {
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return x;
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}
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function cover_codegen_paths() {
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var x = 1;
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var a; // Register EAX
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var b; // Register EBX
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var c; // Register ECX
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var d; // Register EDX
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// Register ESI is already used.
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var di; // Register EDI
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while (x == 1) {
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x = identity(1);
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a = x + 1;
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c = x + 1;
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d = x + 1;
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b = x + 1;
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di = x + 1;
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// Locals are in the corresponding registers here.
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assertEquals(c << a, 8);
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x = identity(1);
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a = x + 1;
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c = x + 1;
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d = x + 1;
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b = x + 1;
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di = x + 1;
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// Locals are in the corresponding registers here.
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assertEquals(a << c, 8);
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x = identity(1);
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a = x + 1;
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c = x + 1;
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d = x + 1;
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b = x + 1;
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di = x + 1;
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// Locals are in the corresponding registers here.
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c = 0; // Free register ecx.
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assertEquals(a << d, 8);
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x = identity(1);
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a = x + 1;
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c = x + 1;
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d = x + 1;
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b = x + 1;
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di = x + 1;
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// Locals are in the corresponding registers here.
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b = 0; // Free register ebx.
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assertEquals(a << d, 8);
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x = 3;
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}
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}
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cover_codegen_paths();
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