1 files changed, 102 insertions, 6 deletions
diff --git a/test/CodeGen/SystemZ/fp-sqrt-02.ll b/test/CodeGen/SystemZ/fp-sqrt-02.ll
index 22a91ad2f4f7..66ffd19d6c31 100644
--- a/test/CodeGen/SystemZ/fp-sqrt-02.ll
+++ b/test/CodeGen/SystemZ/fp-sqrt-02.ll
@@ -3,10 +3,11 @@
 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
 
 declare double @llvm.sqrt.f64(double %f)
+declare double @sqrt(double)
 
 ; Check register square root.
 define double @f1(double %val) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
 ; CHECK: sqdbr %f0, %f0
 ; CHECK: br %r14
   %res = call double @llvm.sqrt.f64(double %val)
@@ -15,7 +16,7 @@ define double @f1(double %val) {
 
 ; Check the low end of the SQDB range.
 define double @f2(double *%ptr) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
 ; CHECK: sqdb %f0, 0(%r2)
 ; CHECK: br %r14
   %val = load double *%ptr
@@ -25,7 +26,7 @@ define double @f2(double *%ptr) {
 
 ; Check the high end of the aligned SQDB range.
 define double @f3(double *%base) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
 ; CHECK: sqdb %f0, 4088(%r2)
 ; CHECK: br %r14
   %ptr = getelementptr double *%base, i64 511
@@ -37,7 +38,7 @@ define double @f3(double *%base) {
 ; Check the next doubleword up, which needs separate address logic.
 ; Other sequences besides this one would be OK.
 define double @f4(double *%base) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
 ; CHECK: aghi %r2, 4096
 ; CHECK: sqdb %f0, 0(%r2)
 ; CHECK: br %r14
@@ -49,7 +50,7 @@ define double @f4(double *%base) {
 
 ; Check negative displacements, which also need separate address logic.
 define double @f5(double *%base) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
 ; CHECK: aghi %r2, -8
 ; CHECK: sqdb %f0, 0(%r2)
 ; CHECK: br %r14
@@ -61,7 +62,7 @@ define double @f5(double *%base) {
 
 ; Check that SQDB allows indices.
 define double @f6(double *%base, i64 %index) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
 ; CHECK: sllg %r1, %r3, 3
 ; CHECK: sqdb %f0, 800(%r1,%r2)
 ; CHECK: br %r14
@@ -71,3 +72,98 @@ define double @f6(double *%base, i64 %index) {
   %res = call double @llvm.sqrt.f64(double %val)
   ret double %res
 }
+
+; Test a case where we spill the source of at least one SQDBR.  We want
+; to use SQDB if possible.
+define void @f7(double *%ptr) {
+; CHECK-LABEL: f7:
+; CHECK: sqdb {{%f[0-9]+}}, 160(%r15)
+; CHECK: br %r14
+  %val0 = load volatile double *%ptr
+  %val1 = load volatile double *%ptr
+  %val2 = load volatile double *%ptr
+  %val3 = load volatile double *%ptr
+  %val4 = load volatile double *%ptr
+  %val5 = load volatile double *%ptr
+  %val6 = load volatile double *%ptr
+  %val7 = load volatile double *%ptr
+  %val8 = load volatile double *%ptr
+  %val9 = load volatile double *%ptr
+  %val10 = load volatile double *%ptr
+  %val11 = load volatile double *%ptr
+  %val12 = load volatile double *%ptr
+  %val13 = load volatile double *%ptr
+  %val14 = load volatile double *%ptr
+  %val15 = load volatile double *%ptr
+  %val16 = load volatile double *%ptr
+
+  %sqrt0 = call double @llvm.sqrt.f64(double %val0)
+  %sqrt1 = call double @llvm.sqrt.f64(double %val1)
+  %sqrt2 = call double @llvm.sqrt.f64(double %val2)
+  %sqrt3 = call double @llvm.sqrt.f64(double %val3)
+  %sqrt4 = call double @llvm.sqrt.f64(double %val4)
+  %sqrt5 = call double @llvm.sqrt.f64(double %val5)
+  %sqrt6 = call double @llvm.sqrt.f64(double %val6)
+  %sqrt7 = call double @llvm.sqrt.f64(double %val7)
+  %sqrt8 = call double @llvm.sqrt.f64(double %val8)
+  %sqrt9 = call double @llvm.sqrt.f64(double %val9)
+  %sqrt10 = call double @llvm.sqrt.f64(double %val10)
+  %sqrt11 = call double @llvm.sqrt.f64(double %val11)
+  %sqrt12 = call double @llvm.sqrt.f64(double %val12)
+  %sqrt13 = call double @llvm.sqrt.f64(double %val13)
+  %sqrt14 = call double @llvm.sqrt.f64(double %val14)
+  %sqrt15 = call double @llvm.sqrt.f64(double %val15)
+  %sqrt16 = call double @llvm.sqrt.f64(double %val16)
+
+  store volatile double %val0, double *%ptr
+  store volatile double %val1, double *%ptr
+  store volatile double %val2, double *%ptr
+  store volatile double %val3, double *%ptr
+  store volatile double %val4, double *%ptr
+  store volatile double %val5, double *%ptr
+  store volatile double %val6, double *%ptr
+  store volatile double %val7, double *%ptr
+  store volatile double %val8, double *%ptr
+  store volatile double %val9, double *%ptr
+  store volatile double %val10, double *%ptr
+  store volatile double %val11, double *%ptr
+  store volatile double %val12, double *%ptr
+  store volatile double %val13, double *%ptr
+  store volatile double %val14, double *%ptr
+  store volatile double %val15, double *%ptr
+  store volatile double %val16, double *%ptr
+
+  store volatile double %sqrt0, double *%ptr
+  store volatile double %sqrt1, double *%ptr
+  store volatile double %sqrt2, double *%ptr
+  store volatile double %sqrt3, double *%ptr
+  store volatile double %sqrt4, double *%ptr
+  store volatile double %sqrt5, double *%ptr
+  store volatile double %sqrt6, double *%ptr
+  store volatile double %sqrt7, double *%ptr
+  store volatile double %sqrt8, double *%ptr
+  store volatile double %sqrt9, double *%ptr
+  store volatile double %sqrt10, double *%ptr
+  store volatile double %sqrt11, double *%ptr
+  store volatile double %sqrt12, double *%ptr
+  store volatile double %sqrt13, double *%ptr
+  store volatile double %sqrt14, double *%ptr
+  store volatile double %sqrt15, double *%ptr
+  store volatile double %sqrt16, double *%ptr
+
+  ret void
+}
+
+; Check that a call to the normal sqrt function is lowered.
+define double @f8(double %dummy, double %val) {
+; CHECK-LABEL: f8:
+; CHECK: sqdbr %f0, %f2
+; CHECK: cdbr %f0, %f0
+; CHECK: jo [[LABEL:\.L.*]]
+; CHECK: br %r14
+; CHECK: [[LABEL]]:
+; CHECK: ldr %f0, %f2
+; CHECK: jg sqrt@PLT
+  %res = tail call double @sqrt(double %val)
+  ret double %res
+}