1 files changed, 103 insertions, 7 deletions

diff --git a/test/CodeGen/SystemZ/fp-sqrt-01.ll b/test/CodeGen/SystemZ/fp-sqrt-01.ll
index 7ed27f56d0d0..7465af456b83 100644
--- a/test/CodeGen/SystemZ/fp-sqrt-01.ll
+++ b/test/CodeGen/SystemZ/fp-sqrt-01.ll
@@ -2,11 +2,12 @@
 ;
 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
 
-declare float @llvm.sqrt.f32(float %f)
+declare float @llvm.sqrt.f32(float)
+declare float @sqrtf(float)
 
 ; Check register square root.
 define float @f1(float %val) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
 ; CHECK: sqebr %f0, %f0
 ; CHECK: br %r14
   %res = call float @llvm.sqrt.f32(float %val)
@@ -15,7 +16,7 @@ define float @f1(float %val) {
 
 ; Check the low end of the SQEB range.
 define float @f2(float *%ptr) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
 ; CHECK: sqeb %f0, 0(%r2)
 ; CHECK: br %r14
   %val = load float *%ptr
@@ -25,7 +26,7 @@ define float @f2(float *%ptr) {
 
 ; Check the high end of the aligned SQEB range.
 define float @f3(float *%base) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
 ; CHECK: sqeb %f0, 4092(%r2)
 ; CHECK: br %r14
   %ptr = getelementptr float *%base, i64 1023
@@ -37,7 +38,7 @@ define float @f3(float *%base) {
 ; Check the next word up, which needs separate address logic.
 ; Other sequences besides this one would be OK.
 define float @f4(float *%base) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
 ; CHECK: aghi %r2, 4096
 ; CHECK: sqeb %f0, 0(%r2)
 ; CHECK: br %r14
@@ -49,7 +50,7 @@ define float @f4(float *%base) {
 
 ; Check negative displacements, which also need separate address logic.
 define float @f5(float *%base) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
 ; CHECK: aghi %r2, -4
 ; CHECK: sqeb %f0, 0(%r2)
 ; CHECK: br %r14
@@ -61,7 +62,7 @@ define float @f5(float *%base) {
 
 ; Check that SQEB allows indices.
 define float @f6(float *%base, i64 %index) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
 ; CHECK: sllg %r1, %r3, 2
 ; CHECK: sqeb %f0, 400(%r1,%r2)
 ; CHECK: br %r14
@@ -71,3 +72,98 @@ define float @f6(float *%base, i64 %index) {
   %res = call float @llvm.sqrt.f32(float %val)
   ret float %res
 }
+
+; Test a case where we spill the source of at least one SQEBR.  We want
+; to use SQEB if possible.
+define void @f7(float *%ptr) {
+; CHECK-LABEL: f7:
+; CHECK: sqeb {{%f[0-9]+}}, 16{{[04]}}(%r15)
+; CHECK: br %r14
+  %val0 = load volatile float *%ptr
+  %val1 = load volatile float *%ptr
+  %val2 = load volatile float *%ptr
+  %val3 = load volatile float *%ptr
+  %val4 = load volatile float *%ptr
+  %val5 = load volatile float *%ptr
+  %val6 = load volatile float *%ptr
+  %val7 = load volatile float *%ptr
+  %val8 = load volatile float *%ptr
+  %val9 = load volatile float *%ptr
+  %val10 = load volatile float *%ptr
+  %val11 = load volatile float *%ptr
+  %val12 = load volatile float *%ptr
+  %val13 = load volatile float *%ptr
+  %val14 = load volatile float *%ptr
+  %val15 = load volatile float *%ptr
+  %val16 = load volatile float *%ptr
+
+  %sqrt0 = call float @llvm.sqrt.f32(float %val0)
+  %sqrt1 = call float @llvm.sqrt.f32(float %val1)
+  %sqrt2 = call float @llvm.sqrt.f32(float %val2)
+  %sqrt3 = call float @llvm.sqrt.f32(float %val3)
+  %sqrt4 = call float @llvm.sqrt.f32(float %val4)
+  %sqrt5 = call float @llvm.sqrt.f32(float %val5)
+  %sqrt6 = call float @llvm.sqrt.f32(float %val6)
+  %sqrt7 = call float @llvm.sqrt.f32(float %val7)
+  %sqrt8 = call float @llvm.sqrt.f32(float %val8)
+  %sqrt9 = call float @llvm.sqrt.f32(float %val9)
+  %sqrt10 = call float @llvm.sqrt.f32(float %val10)
+  %sqrt11 = call float @llvm.sqrt.f32(float %val11)
+  %sqrt12 = call float @llvm.sqrt.f32(float %val12)
+  %sqrt13 = call float @llvm.sqrt.f32(float %val13)
+  %sqrt14 = call float @llvm.sqrt.f32(float %val14)
+  %sqrt15 = call float @llvm.sqrt.f32(float %val15)
+  %sqrt16 = call float @llvm.sqrt.f32(float %val16)
+
+  store volatile float %val0, float *%ptr
+  store volatile float %val1, float *%ptr
+  store volatile float %val2, float *%ptr
+  store volatile float %val3, float *%ptr
+  store volatile float %val4, float *%ptr
+  store volatile float %val5, float *%ptr
+  store volatile float %val6, float *%ptr
+  store volatile float %val7, float *%ptr
+  store volatile float %val8, float *%ptr
+  store volatile float %val9, float *%ptr
+  store volatile float %val10, float *%ptr
+  store volatile float %val11, float *%ptr
+  store volatile float %val12, float *%ptr
+  store volatile float %val13, float *%ptr
+  store volatile float %val14, float *%ptr
+  store volatile float %val15, float *%ptr
+  store volatile float %val16, float *%ptr
+
+  store volatile float %sqrt0, float *%ptr
+  store volatile float %sqrt1, float *%ptr
+  store volatile float %sqrt2, float *%ptr
+  store volatile float %sqrt3, float *%ptr
+  store volatile float %sqrt4, float *%ptr
+  store volatile float %sqrt5, float *%ptr
+  store volatile float %sqrt6, float *%ptr
+  store volatile float %sqrt7, float *%ptr
+  store volatile float %sqrt8, float *%ptr
+  store volatile float %sqrt9, float *%ptr
+  store volatile float %sqrt10, float *%ptr
+  store volatile float %sqrt11, float *%ptr
+  store volatile float %sqrt12, float *%ptr
+  store volatile float %sqrt13, float *%ptr
+  store volatile float %sqrt14, float *%ptr
+  store volatile float %sqrt15, float *%ptr
+  store volatile float %sqrt16, float *%ptr
+
+  ret void
+}
+
+; Check that a call to the normal sqrtf function is lowered.
+define float @f8(float %dummy, float %val) {
+; CHECK-LABEL: f8:
+; CHECK: sqebr %f0, %f2
+; CHECK: cebr %f0, %f0
+; CHECK: jo [[LABEL:\.L.*]]
+; CHECK: br %r14
+; CHECK: [[LABEL]]:
+; CHECK: ler %f0, %f2
+; CHECK: jg sqrtf@PLT
+  %res = tail call float @sqrtf(float %val)
+  ret float %res
+}