042e0883cb
with respect to the lower "left-hand-side bitwidth" bits, even when negative); see OpenCL spec 6.3j. This patch both implements this behaviour in the code generator and "constant folding" bits of Sema, and also prevents tests to detect undefinedness in terms of the weaker C99 or C++ specifications from being applied. llvm-svn: 171755
15 lines
518 B
Common Lisp
15 lines
518 B
Common Lisp
// RUN: %clang_cc1 -x cl -O1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s
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// OpenCL essentially reduces all shift amounts to the last word-size bits before evaluating.
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// Test this both for variables and constants evaluated in the front-end.
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//CHECK: @array0 = common global [256 x i8]
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char array0[((int)1)<<40];
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//CHECK: @array1 = common global [256 x i8]
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char array1[((int)1)<<(-24)];
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//CHECK: @negativeShift32
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int negativeShift32(int a,int b) {
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//CHECK: ret i32 65536
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return ((int)1)<<(-16);
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}
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