ARM: add test for crc32 instructions in CodeGen.

Somehow we seem to have ended up without any actual tests of the
CodeGen side. Easy enough to fix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225930 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/ARM/crc32.ll b/test/CodeGen/ARM/crc32.ll
new file mode 100644 (file)
index 0000000..cc94330
--- /dev/null
+++ b/test/CodeGen/ARM/crc32.ll
@@ -0,0 +1,58 @@
+; RUN: llc -mtriple=thumbv8 -o - %s | FileCheck %s
+
+define i32 @test_crc32b(i32 %cur, i8 %next) {
+; CHECK-LABEL: test_crc32b:
+; CHECK: crc32b r0, r0, r1
+  %bits = zext i8 %next to i32
+  %val = call i32 @llvm.arm.crc32b(i32 %cur, i32 %bits)
+  ret i32 %val
+}
+
+define i32 @test_crc32h(i32 %cur, i16 %next) {
+; CHECK-LABEL: test_crc32h:
+; CHECK: crc32h r0, r0, r1
+  %bits = zext i16 %next to i32
+  %val = call i32 @llvm.arm.crc32h(i32 %cur, i32 %bits)
+  ret i32 %val
+}
+
+define i32 @test_crc32w(i32 %cur, i32 %next) {
+; CHECK-LABEL: test_crc32w:
+; CHECK: crc32w r0, r0, r1
+  %val = call i32 @llvm.arm.crc32w(i32 %cur, i32 %next)
+  ret i32 %val
+}
+
+define i32 @test_crc32cb(i32 %cur, i8 %next) {
+; CHECK-LABEL: test_crc32cb:
+; CHECK: crc32cb r0, r0, r1
+  %bits = zext i8 %next to i32
+  %val = call i32 @llvm.arm.crc32cb(i32 %cur, i32 %bits)
+  ret i32 %val
+}
+
+define i32 @test_crc32ch(i32 %cur, i16 %next) {
+; CHECK-LABEL: test_crc32ch:
+; CHECK: crc32ch r0, r0, r1
+  %bits = zext i16 %next to i32
+  %val = call i32 @llvm.arm.crc32ch(i32 %cur, i32 %bits)
+  ret i32 %val
+}
+
+define i32 @test_crc32cw(i32 %cur, i32 %next) {
+; CHECK-LABEL: test_crc32cw:
+; CHECK: crc32cw r0, r0, r1
+  %val = call i32 @llvm.arm.crc32cw(i32 %cur, i32 %next)
+  ret i32 %val
+}
+
+
+declare i32 @llvm.arm.crc32b(i32, i32)
+declare i32 @llvm.arm.crc32h(i32, i32)
+declare i32 @llvm.arm.crc32w(i32, i32)
+declare i32 @llvm.arm.crc32x(i32, i64)
+
+declare i32 @llvm.arm.crc32cb(i32, i32)
+declare i32 @llvm.arm.crc32ch(i32, i32)
+declare i32 @llvm.arm.crc32cw(i32, i32)
+declare i32 @llvm.arm.crc32cx(i32, i64)