[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, 63 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/branch-03.ll b/test/CodeGen/SystemZ/branch-03.ll
new file mode 100644
index 0000000000..1e447d034a
--- /dev/null
+++ b/test/CodeGen/SystemZ/branch-03.ll
@@ -0,0 +1,63 @@
+; Test all condition-code masks that are relevant for unsigned integer
+; comparisons.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+define void @f1(i32 *%src, i32 %target) {
+; CHECK: f1:
+; CHECK: .cfi_startproc
+; CHECK: .L[[LABEL:.*]]:
+; CHECK: cl %r3, 0(%r2)
+; CHECK-NEXT: j{{g?}}le .L[[LABEL]]
+  br label %loop
+loop:
+  %val = load volatile i32 *%src
+  %cond = icmp ule i32 %target, %val
+  br i1 %cond, label %loop, label %exit
+exit:
+  ret void
+}
+
+define void @f2(i32 *%src, i32 %target) {
+; CHECK: f2:
+; CHECK: .cfi_startproc
+; CHECK: .L[[LABEL:.*]]:
+; CHECK: cl %r3, 0(%r2)
+; CHECK-NEXT: j{{g?}}l .L[[LABEL]]
+  br label %loop
+loop:
+  %val = load volatile i32 *%src
+  %cond = icmp ult i32 %target, %val
+  br i1 %cond, label %loop, label %exit
+exit:
+  ret void
+}
+
+define void @f3(i32 *%src, i32 %target) {
+; CHECK: f3:
+; CHECK: .cfi_startproc
+; CHECK: .L[[LABEL:.*]]:
+; CHECK: cl %r3, 0(%r2)
+; CHECK-NEXT: j{{g?}}h .L[[LABEL]]
+  br label %loop
+loop:
+  %val = load volatile i32 *%src
+  %cond = icmp ugt i32 %target, %val
+  br i1 %cond, label %loop, label %exit
+exit:
+  ret void
+}
+
+define void @f4(i32 *%src, i32 %target) {
+; CHECK: f4:
+; CHECK: .cfi_startproc
+; CHECK: .L[[LABEL:.*]]:
+; CHECK: cl %r3, 0(%r2)
+; CHECK-NEXT: j{{g?}}he .L[[LABEL]]
+  br label %loop
+loop:
+  %val = load volatile i32 *%src
+  %cond = icmp uge i32 %target, %val
+  br i1 %cond, label %loop, label %exit
+exit:
+  ret void
+}