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llvm-6502/lib/Target/CBackend
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Chris Lattner 8399e02a2c Fix volatile load/store of pointers. Consider this testcase: 
void %test(int** %P) {
  %A = volatile load int** %P
  ret void
}

void %test2(int*** %Q) {
  %P = load int*** %Q
  volatile store int** %P, int*** %Q
  ret void
}

instead of emitting:

void test(int **l1_P) {
  int *l2_A;

  l2_A = (int **((volatile int **)l1_P));
  return;
}
void test2(int ***l2_Q) {
  int **l1_P;

  l1_P = *l2_Q;
  *((volatile int ***)l2_Q) = l1_P;
  return;
}

... which is loading/storing volatile pointers, not through volatile pointers,
emit this (which is right):

void test(int **l1_P) {
  int *l3_A;

  l3_A = *((int * volatile*)l1_P);
  return;
}
void test2(int ***l2_Q) {
  int **l1_P;

  l1_P = *l2_Q;
  *((int ** volatile*)l2_Q) = l1_P;
  return;
}


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20191 91177308-0d34-0410-b5e6-96231b3b80d8
2005-02-15 05:52:14 +00:00
..
CBackend.cpp Fix volatile load/store of pointers. Consider this testcase: 2005-02-15 05:52:14 +00:00
CTargetMachine.h Auto-registrate target 2004-07-11 02:48:49 +00:00
Makefile Change Library Names Not To Conflict With Others When Installed 2004-10-27 23:18:45 +00:00
Writer.cpp Fix volatile load/store of pointers. Consider this testcase: 2005-02-15 05:52:14 +00:00