1 files changed, 87 insertions, 6 deletions

diff --git a/test/CodeGen/SystemZ/fp-conv-04.ll b/test/CodeGen/SystemZ/fp-conv-04.ll
index b7b516693430b..518d6c28d8670 100644
--- a/test/CodeGen/SystemZ/fp-conv-04.ll
+++ b/test/CodeGen/SystemZ/fp-conv-04.ll
@@ -4,7 +4,7 @@
 
 ; Check register extension.
 define void @f1(fp128 *%dst, double %val) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
 ; CHECK: lxdbr %f0, %f0
 ; CHECK: std %f0, 0(%r2)
 ; CHECK: std %f2, 8(%r2)
@@ -16,7 +16,7 @@ define void @f1(fp128 *%dst, double %val) {
 
 ; Check the low end of the LXDB range.
 define void @f2(fp128 *%dst, double *%ptr) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
 ; CHECK: lxdb %f0, 0(%r3)
 ; CHECK: std %f0, 0(%r2)
 ; CHECK: std %f2, 8(%r2)
@@ -29,7 +29,7 @@ define void @f2(fp128 *%dst, double *%ptr) {
 
 ; Check the high end of the aligned LXDB range.
 define void @f3(fp128 *%dst, double *%base) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
 ; CHECK: lxdb %f0, 4088(%r3)
 ; CHECK: std %f0, 0(%r2)
 ; CHECK: std %f2, 8(%r2)
@@ -44,7 +44,7 @@ define void @f3(fp128 *%dst, double *%base) {
 ; Check the next doubleword up, which needs separate address logic.
 ; Other sequences besides this one would be OK.
 define void @f4(fp128 *%dst, double *%base) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
 ; CHECK: aghi %r3, 4096
 ; CHECK: lxdb %f0, 0(%r3)
 ; CHECK: std %f0, 0(%r2)
@@ -59,7 +59,7 @@ define void @f4(fp128 *%dst, double *%base) {
 
 ; Check negative displacements, which also need separate address logic.
 define void @f5(fp128 *%dst, double *%base) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
 ; CHECK: aghi %r3, -8
 ; CHECK: lxdb %f0, 0(%r3)
 ; CHECK: std %f0, 0(%r2)
@@ -74,7 +74,7 @@ define void @f5(fp128 *%dst, double *%base) {
 
 ; Check that LXDB allows indices.
 define void @f6(fp128 *%dst, double *%base, i64 %index) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
 ; CHECK: sllg %r1, %r4, 3
 ; CHECK: lxdb %f0, 800(%r1,%r3)
 ; CHECK: std %f0, 0(%r2)
@@ -87,3 +87,84 @@ define void @f6(fp128 *%dst, double *%base, i64 %index) {
   store fp128 %res, fp128 *%dst
   ret void
 }
+
+; Test a case where we spill the source of at least one LXDBR.  We want
+; to use LXDB if possible.
+define void @f7(fp128 *%ptr1, double *%ptr2) {
+; CHECK-LABEL: f7:
+; CHECK: lxdb {{%f[0-9]+}}, 160(%r15)
+; CHECK: br %r14
+  %val0 = load volatile double *%ptr2
+  %val1 = load volatile double *%ptr2
+  %val2 = load volatile double *%ptr2
+  %val3 = load volatile double *%ptr2
+  %val4 = load volatile double *%ptr2
+  %val5 = load volatile double *%ptr2
+  %val6 = load volatile double *%ptr2
+  %val7 = load volatile double *%ptr2
+  %val8 = load volatile double *%ptr2
+  %val9 = load volatile double *%ptr2
+  %val10 = load volatile double *%ptr2
+  %val11 = load volatile double *%ptr2
+  %val12 = load volatile double *%ptr2
+  %val13 = load volatile double *%ptr2
+  %val14 = load volatile double *%ptr2
+  %val15 = load volatile double *%ptr2
+  %val16 = load volatile double *%ptr2
+
+  %ext0 = fpext double %val0 to fp128
+  %ext1 = fpext double %val1 to fp128
+  %ext2 = fpext double %val2 to fp128
+  %ext3 = fpext double %val3 to fp128
+  %ext4 = fpext double %val4 to fp128
+  %ext5 = fpext double %val5 to fp128
+  %ext6 = fpext double %val6 to fp128
+  %ext7 = fpext double %val7 to fp128
+  %ext8 = fpext double %val8 to fp128
+  %ext9 = fpext double %val9 to fp128
+  %ext10 = fpext double %val10 to fp128
+  %ext11 = fpext double %val11 to fp128
+  %ext12 = fpext double %val12 to fp128
+  %ext13 = fpext double %val13 to fp128
+  %ext14 = fpext double %val14 to fp128
+  %ext15 = fpext double %val15 to fp128
+  %ext16 = fpext double %val16 to fp128
+
+  store volatile double %val0, double *%ptr2
+  store volatile double %val1, double *%ptr2
+  store volatile double %val2, double *%ptr2
+  store volatile double %val3, double *%ptr2
+  store volatile double %val4, double *%ptr2
+  store volatile double %val5, double *%ptr2
+  store volatile double %val6, double *%ptr2
+  store volatile double %val7, double *%ptr2
+  store volatile double %val8, double *%ptr2
+  store volatile double %val9, double *%ptr2
+  store volatile double %val10, double *%ptr2
+  store volatile double %val11, double *%ptr2
+  store volatile double %val12, double *%ptr2
+  store volatile double %val13, double *%ptr2
+  store volatile double %val14, double *%ptr2
+  store volatile double %val15, double *%ptr2
+  store volatile double %val16, double *%ptr2
+
+  store volatile fp128 %ext0, fp128 *%ptr1
+  store volatile fp128 %ext1, fp128 *%ptr1
+  store volatile fp128 %ext2, fp128 *%ptr1
+  store volatile fp128 %ext3, fp128 *%ptr1
+  store volatile fp128 %ext4, fp128 *%ptr1
+  store volatile fp128 %ext5, fp128 *%ptr1
+  store volatile fp128 %ext6, fp128 *%ptr1
+  store volatile fp128 %ext7, fp128 *%ptr1
+  store volatile fp128 %ext8, fp128 *%ptr1
+  store volatile fp128 %ext9, fp128 *%ptr1
+  store volatile fp128 %ext10, fp128 *%ptr1
+  store volatile fp128 %ext11, fp128 *%ptr1
+  store volatile fp128 %ext12, fp128 *%ptr1
+  store volatile fp128 %ext13, fp128 *%ptr1
+  store volatile fp128 %ext14, fp128 *%ptr1
+  store volatile fp128 %ext15, fp128 *%ptr1
+  store volatile fp128 %ext16, fp128 *%ptr1
+
+  ret void
+}