ae6ca2fc3f
Summary: For some bitfield patterns (like the one added by this commit), Clang will generate non-regular data types like i24 or i48. This patch follows a pretty naive approach of just bumping the type size to the next power of 2. DataExtractor know how to deal with weird sizes. The operations on Scalar do not know how to deal with those types though, so we have to legalize the size when creating a Scalar. Reviewers: jingham, clayborg Subscribers: lldb-commits Differential Revision: https://reviews.llvm.org/D51245 llvm-svn: 340880
97 lines
2.6 KiB
C
97 lines
2.6 KiB
C
//===-- main.c --------------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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int main (int argc, char const *argv[])
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{
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struct Bits
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{
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uint32_t : 1, // Unnamed bitfield
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b1 : 1,
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b2 : 2,
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: 2, // Unnamed bitfield
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b3 : 3,
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: 2, // Unnamed bitfield (this will get removed)
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b4 __attribute__ ((aligned(16))),
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b5 : 5,
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b6 : 6,
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b7 : 7,
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four : 4;
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};
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printf("%lu", sizeof(struct Bits));
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struct Bits bits;
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int i;
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for (i=0; i<(1<<1); i++)
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bits.b1 = i; //// break $source:$line
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for (i=0; i<(1<<2); i++)
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bits.b2 = i; //// break $source:$line
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for (i=0; i<(1<<3); i++)
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bits.b3 = i; //// break $source:$line
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for (i=0; i<(1<<4); i++)
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bits.b4 = i; //// break $source:$line
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for (i=0; i<(1<<5); i++)
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bits.b5 = i; //// break $source:$line
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for (i=0; i<(1<<6); i++)
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bits.b6 = i; //// break $source:$line
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for (i=0; i<(1<<7); i++)
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bits.b7 = i; //// break $source:$line
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for (i=0; i<(1<<4); i++)
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bits.four = i; //// break $source:$line
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struct MoreBits
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{
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uint32_t a : 3;
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uint8_t : 1;
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uint8_t b : 1;
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uint8_t c : 1;
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uint8_t d : 1;
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};
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struct MoreBits more_bits;
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more_bits.a = 3;
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more_bits.b = 0;
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more_bits.c = 1;
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more_bits.d = 0;
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struct EvenMoreBits
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{
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uint8_t b1 : 1, b2 : 1, b3 : 1, b4 : 1, b5 : 1, b6 : 1,
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b7 : 1, b8 : 1, b9 : 1, b10 : 1, b11 : 1, b12 : 1,
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b13 : 1, b14 : 1, b15 : 1, b16 : 1, b17 : 1;
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};
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struct EvenMoreBits even_more_bits;
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memset(&even_more_bits, 0, sizeof(even_more_bits));
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even_more_bits.b1 = 1;
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even_more_bits.b5 = 1;
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even_more_bits.b7 = 1;
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even_more_bits.b13 = 1;
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#pragma pack(1)
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struct PackedBits
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{
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char a;
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uint32_t b : 5,
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c : 27;
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};
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#pragma pack()
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struct PackedBits packed;
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packed.a = 'a';
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packed.b = 10;
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packed.c = 0x7112233;
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return 0; //// Set break point at this line.
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}
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