[SystemZ] Add CodeGen test cases

This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 108 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/and-06.ll b/test/CodeGen/SystemZ/and-06.ll
new file mode 100644
index 0000000..bbb5e7b
--- /dev/null
+++ b/test/CodeGen/SystemZ/and-06.ll
@@ -0,0 +1,108 @@
+; Test that we can use NI for byte operations that are expressed as i32
+; or i64 operations.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Zero extension to 32 bits, negative constant.
+define void @f1(i8 *%ptr) {
+; CHECK: f1:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = zext i8 %val to i32
+  %and = and i32 %ext, -2
+  %trunc = trunc i32 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Zero extension to 64 bits, negative constant.
+define void @f2(i8 *%ptr) {
+; CHECK: f2:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = zext i8 %val to i64
+  %and = and i64 %ext, -2
+  %trunc = trunc i64 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Zero extension to 32 bits, positive constant.
+define void @f3(i8 *%ptr) {
+; CHECK: f3:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = zext i8 %val to i32
+  %and = and i32 %ext, 254
+  %trunc = trunc i32 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Zero extension to 64 bits, positive constant.
+define void @f4(i8 *%ptr) {
+; CHECK: f4:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = zext i8 %val to i64
+  %and = and i64 %ext, 254
+  %trunc = trunc i64 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Sign extension to 32 bits, negative constant.
+define void @f5(i8 *%ptr) {
+; CHECK: f5:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = sext i8 %val to i32
+  %and = and i32 %ext, -2
+  %trunc = trunc i32 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Sign extension to 64 bits, negative constant.
+define void @f6(i8 *%ptr) {
+; CHECK: f6:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = sext i8 %val to i64
+  %and = and i64 %ext, -2
+  %trunc = trunc i64 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Sign extension to 32 bits, positive constant.
+define void @f7(i8 *%ptr) {
+; CHECK: f7:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = sext i8 %val to i32
+  %and = and i32 %ext, 254
+  %trunc = trunc i32 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}
+
+; Sign extension to 64 bits, positive constant.
+define void @f8(i8 *%ptr) {
+; CHECK: f8:
+; CHECK: ni 0(%r2), 254
+; CHECK: br %r14
+  %val = load i8 *%ptr
+  %ext = sext i8 %val to i64
+  %and = and i64 %ext, 254
+  %trunc = trunc i64 %and to i8
+  store i8 %trunc, i8 *%ptr
+  ret void
+}