Revert r198208 and reapply:

[oota-llvm.git] / test / CodeGen / SystemZ / fp-cmp-03.ll

diff --git a/test/CodeGen/SystemZ/fp-cmp-03.ll b/test/CodeGen/SystemZ/fp-cmp-03.ll
index 1a5009e35f39b4f14a20454a93848d4a053cf9a3..e777d00c968734f4532cd630ecafa0ca3a5aa88a 100644 (file)
--- a/test/CodeGen/SystemZ/fp-cmp-03.ll
+++ b/test/CodeGen/SystemZ/fp-cmp-03.ll
@@ -1,10 +1,11 @@
-; Test 128-bit floating-point comparison.
+; Test 128-bit floating-point comparison.  The tests assume a z10 implementation
+; of select, using conditional branches rather than LOCGR.
 ;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
 
 ; There is no memory form of 128-bit comparison.
 define i64 @f1(i64 %a, i64 %b, fp128 *%ptr, float %f2) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
 ; CHECK: lxebr %f0, %f0
 ; CHECK: ld %f1, 0(%r4)
 ; CHECK: ld %f3, 8(%r4)
@@ -18,3 +19,18 @@ define i64 @f1(i64 %a, i64 %b, fp128 *%ptr, float %f2) {
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
 }
+
+; Check comparison with zero.
+define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) {
+; CHECK-LABEL: f2:
+; CHECK: ld %f0, 0(%r4)
+; CHECK: ld %f2, 8(%r4)
+; CHECK: ltxbr %f0, %f0
+; CHECK-NEXT: je
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+  %f = load fp128 *%ptr
+  %cond = fcmp oeq fp128 %f, 0xL00000000000000000000000000000000
+  %res = select i1 %cond, i64 %a, i64 %b
+  ret i64 %res
+}