[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, 41 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/asm-14.ll b/test/CodeGen/SystemZ/asm-14.ll
new file mode 100644
index 0000000..b6b28d6
--- /dev/null
+++ b/test/CodeGen/SystemZ/asm-14.ll
@@ -0,0 +1,41 @@
+; Test the "L" constraint (20-bit signed constants).
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Test 1 below the first valid value.
+define i32 @f1() {
+; CHECK: f1:
+; CHECK: iilf [[REG:%r[0-5]]], 4294443007
+; CHECK: blah %r2 [[REG]]
+; CHECK: br %r14
+  %val = call i32 asm "blah $0 $1", "=&r,rL" (i32 -524289)
+  ret i32 %val
+}
+
+; Test the first valid value.
+define i32 @f2() {
+; CHECK: f2:
+; CHECK: blah %r2 -524288
+; CHECK: br %r14
+  %val = call i32 asm "blah $0 $1", "=&r,rL" (i32 -524288)
+  ret i32 %val
+}
+
+; Test the last valid value.
+define i32 @f3() {
+; CHECK: f3:
+; CHECK: blah %r2 524287
+; CHECK: br %r14
+  %val = call i32 asm "blah $0 $1", "=&r,rL" (i32 524287)
+  ret i32 %val
+}
+
+; Test 1 above the last valid value.
+define i32 @f4() {
+; CHECK: f4:
+; CHECK: llilh [[REG:%r[0-5]]], 8
+; CHECK: blah %r2 [[REG]]
+; CHECK: br %r14
+  %val = call i32 asm "blah $0 $1", "=&r,rL" (i32 524288)
+  ret i32 %val
+}