39 lines
1004 B
C
39 lines
1004 B
C
/* { dg-do compile } */
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/* { dg-options "-O -fno-tree-sra -fdump-tree-fre-details -fdump-tree-optimized" } */
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#if (__SIZEOF_INT__ == __SIZEOF_FLOAT__)
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typedef int intflt;
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#elif (__SIZEOF_LONG__ == __SIZEOF_FLOAT__)
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typedef long intflt;
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#else
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#error Add target support here for type that will union float size
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#endif
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struct X {
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int i;
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union {
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intflt j;
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intflt k;
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float f;
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} u;
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};
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intflt foo(intflt j)
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{
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struct X a;
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a.u.j = j;
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a.u.f = a.u.f;
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a.u.f = a.u.f;
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a.u.j = a.u.j;
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a.u.f = a.u.f;
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return a.u.k;
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}
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/* { dg-final { scan-tree-dump-times "Inserted pretmp" 1 "fre" } } */
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/* { dg-final { scan-tree-dump-times "Replaced a.u.f with pretmp" 3 "fre" } } */
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/* { dg-final { scan-tree-dump-times "Replaced a.u.k with j" 1 "fre" } } */
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/* { dg-final { scan-tree-dump "= VIEW_CONVERT_EXPR<float>\\\(j_" "fre" } } */
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/* { dg-final { scan-tree-dump "return j" "optimized" } } */
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/* { dg-final { cleanup-tree-dump "fre" } } */
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/* { dg-final { cleanup-tree-dump "optimized" } } */
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