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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/pr23623.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/pr23623.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/pr23623.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/pr23623.c b/gcc-4.9/gcc/testsuite/gcc.dg/pr23623.c new file mode 100644 index 000000000..7ba147018 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/pr23623.c @@ -0,0 +1,48 @@ +/* { dg-do compile } */ +/* { dg-require-effective-target size32plus } */ +/* { dg-options "-fstrict-volatile-bitfields -fdump-rtl-final" } */ + +/* With -fstrict-volatile-bitfields, the volatile accesses to bf2.b + and bf3.b must do unsigned int reads/writes. The non-volatile + accesses to bf1.b are not so constrained. */ + +extern struct +{ + unsigned int b : 1; + unsigned int : 31; +} bf1; + +extern volatile struct +{ + unsigned int b : 1; + unsigned int : 31; +} bf2; + +extern struct +{ + volatile unsigned int b : 1; + volatile unsigned int : 31; +} bf3; + +void writeb(void) +{ + bf1.b = 1; + bf2.b = 1; /* volatile read + volatile write */ + bf3.b = 1; /* volatile read + volatile write */ +} + +extern unsigned int x1, x2, x3; + +void readb(void) +{ + x1 = bf1.b; + x2 = bf2.b; /* volatile write */ + x3 = bf3.b; /* volatile write */ +} + +/* There should be 6 volatile MEMs total, but scan-rtl-dump-times counts + the number of match variables and not the number of matches. Since + the parenthesized subexpression in the regexp introduces an extra match + variable, we need to give a count of 12 instead of 6 here. */ +/* { dg-final { scan-rtl-dump-times "mem/v(/.)*:SI" 12 "final" } } */ +/* { dg-final { cleanup-rtl-dump "final" } } */ |