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| author | John Criswell <criswell@uiuc.edu> | 2004-04-14 13:52:56 +0000 |
|---|---|---|
| committer | John Criswell <criswell@uiuc.edu> | 2004-04-14 13:52:56 +0000 |
| commit | 5365b6d143fe5f1463a512ba98be9ce348046de6 (patch) | |
| tree | 053161de0c4da9b5c89e8ec68aeaa92cb1f1f7d2 /test/CodeGen | |
| parent | 994a765e5cc28beae12e99fe2c680ad15c951cbd (diff) | |
| download | external_llvm-5365b6d143fe5f1463a512ba98be9ce348046de6.zip external_llvm-5365b6d143fe5f1463a512ba98be9ce348046de6.tar.gz external_llvm-5365b6d143fe5f1463a512ba98be9ce348046de6.tar.bz2 | |
Test for memory mapped I/O intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12943 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen')
| -rw-r--r-- | test/CodeGen/X86/io.llx | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGen/X86/io.llx b/test/CodeGen/X86/io.llx new file mode 100644 index 0000000..c5b00d5 --- /dev/null +++ b/test/CodeGen/X86/io.llx @@ -0,0 +1,21 @@ +; 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 +} + |