; 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)
; 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
; 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
; 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
; 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
; 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
%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
+}