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Test for memory mapped I/O intrinsics.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12943 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
John Criswell 2004-04-14 13:52:56 +00:00
parent 994a765e5c
commit 5365b6d143
1 changed files with 21 additions and 0 deletions
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test/CodeGen/X86/io.llx Normal file
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; RUN: llvm-as < %s | llc -march=x86
implementation
declare int %llvm.readio (int *)
declare void %llvm.writeio (int, int *)
int %in(int * %p1) {
%p2 = alloca int
%i1 = call int %llvm.readio (int* %p1)
%i2 = call int %llvm.readio (int* %p2)
%r = add int %i1, %i2
ret int %r
}
void %out(int* %p) {
call void(int, int*)* %llvm.writeio (int 1, int * %p)
ret void
}