Add crc32 instruction and intrinsics. Add a new class of prefix

bytes for F2 0F 38 and propagate. Add a FIXME for a set
of possibilities which correspond to intrinsics already used.

New test.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78508 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 38 insertions, 0 deletions

diff --git a/test/CodeGen/X86/sse42.ll b/test/CodeGen/X86/sse42.ll
new file mode 100644
index 00000000000..1652294ded2
--- /dev/null
+++ b/test/CodeGen/X86/sse42.ll
@@ -0,0 +1,38 @@
+; RUN: llvm-as < %s | llc -mtriple=i686-apple-darwin9 -mattr=sse42 | FileCheck %s -check-prefix=X32
+; RUN: llvm-as < %s | llc -mtriple=x86_64-apple-darwin9 -mattr=sse42 | FileCheck %s -check-prefix=X64
+
+declare i32 @llvm.x86.sse42.crc32.8(i32, i8) nounwind
+declare i32 @llvm.x86.sse42.crc32.16(i32, i16) nounwind
+declare i32 @llvm.x86.sse42.crc32.32(i32, i32) nounwind
+
+define i32 @crc32_8(i32 %a, i8 %b) nounwind {
+  %tmp = call i32 @llvm.x86.sse42.crc32.8(i32 %a, i8 %b)
+  ret i32 %tmp
+; X32: _crc32_8:
+; X32:     crc32   8(%esp), %eax
+
+; X64: _crc32_8:
+; X64:     crc32   %sil, %eax
+}
+
+
+define i32 @crc32_16(i32 %a, i16 %b) nounwind {
+  %tmp = call i32 @llvm.x86.sse42.crc32.16(i32 %a, i16 %b)
+  ret i32 %tmp
+; X32: _crc32_16:
+; X32:     crc32   8(%esp), %eax
+
+; X64: _crc32_16:
+; X64:     crc32   %si, %eax
+}
+
+
+define i32 @crc32_32(i32 %a, i32 %b) nounwind {
+  %tmp = call i32 @llvm.x86.sse42.crc32.32(i32 %a, i32 %b)
+  ret i32 %tmp
+; X32: _crc32_32:
+; X32:     crc32   8(%esp), %eax
+
+; X64: _crc32_32:
+; X64:     crc32   %esi, %eax
+}