[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, 45 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/fp-conv-10.ll b/test/CodeGen/SystemZ/fp-conv-10.ll
new file mode 100644
index 00000000000..bb8878bacee
--- /dev/null
+++ b/test/CodeGen/SystemZ/fp-conv-10.ll
@@ -0,0 +1,45 @@
+; Test conversion of floating-point values to unsigned i32s.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; z10 doesn't have native support for unsigned fp-to-i32 conversions;
+; they were added in z196 as the Convert to Logical family of instructions.
+; Promoting to i64 doesn't generate an inexact condition for values that are
+; outside the i32 range but in the i64 range, so use the default expansion.
+
+; Test f32->i32.
+define i32 @f1(float %f) {
+; CHECK: f1:
+; CHECK: cebr
+; CHECK: sebr
+; CHECK: cfebr
+; CHECK: xilf
+; CHECK: br %r14
+  %conv = fptoui float %f to i32
+  ret i32 %conv
+}
+
+; Test f64->i32.
+define i32 @f2(double %f) {
+; CHECK: f2:
+; CHECK: cdbr
+; CHECK: sdbr
+; CHECK: cfdbr
+; CHECK: xilf
+; CHECK: br %r14
+  %conv = fptoui double %f to i32
+  ret i32 %conv
+}
+
+; Test f128->i32.
+define i32 @f3(fp128 *%src) {
+; CHECK: f3:
+; CHECK: cxbr
+; CHECK: sxbr
+; CHECK: cfxbr
+; CHECK: xilf
+; CHECK: br %r14
+  %f = load fp128 *%src
+  %conv = fptoui fp128 %f to i32
+  ret i32 %conv
+}