[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, 44 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/fp-conv-12.ll b/test/CodeGen/SystemZ/fp-conv-12.ll
new file mode 100644
index 0000000000..4445b14ee8
--- /dev/null
+++ b/test/CodeGen/SystemZ/fp-conv-12.ll
@@ -0,0 +1,44 @@
+; Test conversion of floating-point values to unsigned i64s.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; z10 doesn't have native support for unsigned fp-to-i64 conversions;
+; they were added in z196 as the Convert to Logical family of instructions.
+; Convert via signed i64s instead.
+
+; Test f32->i64.
+define i64 @f1(float %f) {
+; CHECK: f1:
+; CHECK: cebr
+; CHECK: sebr
+; CHECK: cgebr
+; CHECK: xihf
+; CHECK: br %r14
+  %conv = fptoui float %f to i64
+  ret i64 %conv
+}
+
+; Test f64->i64.
+define i64 @f2(double %f) {
+; CHECK: f2:
+; CHECK: cdbr
+; CHECK: sdbr
+; CHECK: cgdbr
+; CHECK: xihf
+; CHECK: br %r14
+  %conv = fptoui double %f to i64
+  ret i64 %conv
+}
+
+; Test f128->i64.
+define i64 @f3(fp128 *%src) {
+; CHECK: f3:
+; CHECK: cxbr
+; CHECK: sxbr
+; CHECK: cgxbr
+; CHECK: xihf
+; CHECK: br %r14
+  %f = load fp128 *%src
+  %conv = fptoui fp128 %f to i64
+  ret i64 %conv
+}