8ea884b85e
2020-02-13 Richard Biener <rguenther@suse.de> PR testsuite/93717 * gcc.dg/optimize-bswapsi-2.c: Add BE case.
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
/* { dg-do compile } */
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/* { dg-require-effective-target bswap } */
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/* { dg-require-effective-target stdint_types } */
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/* { dg-options "-O2 -fdump-tree-bswap" } */
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/* { dg-additional-options "-march=z900" { target s390*-*-* } } */
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#include <stdint.h>
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extern unsigned char data[4];
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struct uint32_st {
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unsigned char u0, u1, u2, u3;
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};
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uint32_t read_le32_1 (void)
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{
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return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
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}
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uint32_t read_le32_2 (struct uint32_st data)
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{
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return data.u0 | (data.u1 << 8) | (data.u2 << 16) | (data.u3 << 24);
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}
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uint32_t read_le32_3 (unsigned char *data)
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{
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return *data | (*(data + 1) << 8) | (*(data + 2) << 16)
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| (*(data + 3) << 24);
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}
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uint32_t read_be32_1 (void)
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{
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return data[3] | (data[2] << 8) | (data[1] << 16) | (data[0] << 24);
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}
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uint32_t read_be32_2 (struct uint32_st data)
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{
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return data.u3 | (data.u2 << 8) | (data.u1 << 16) | (data.u0 << 24);
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}
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uint32_t read_be32_3 (unsigned char *data)
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{
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return *(data + 3) | (*(data + 2) << 8) | (*(data + 1) << 16)
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| (*data << 24);
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}
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static inline unsigned short
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get_unaligned_16_le (unsigned char *p)
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{
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return p[0] | (p[1] << 8);
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}
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unsigned int
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get_unaligned_32_le (unsigned char *p)
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{
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return get_unaligned_16_le (p) | (get_unaligned_16_le (p + 2) << 16);
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}
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static inline unsigned short
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get_unaligned_16_be (unsigned char *p)
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{
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return p[1] | (p[0] << 8);
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}
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unsigned int
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get_unaligned_32_be (unsigned char *p)
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{
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return get_unaligned_16_be (p + 2) | (get_unaligned_16_be (p) << 16);
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}
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/* { dg-final { scan-tree-dump-times "32 bit load in target endianness found at" 4 "bswap" } } */
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/* { dg-final { scan-tree-dump-times "32 bit bswap implementation found at" 4 "bswap" } } */
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