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|
; Test 64-bit square root.
;
; 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-LABEL: f1:
; CHECK: sqdbr %f0, %f0
; CHECK: br %r14
%res = call double @llvm.sqrt.f64(double %val)
ret double %res
}
; Check the low end of the SQDB range.
define double @f2(double *%ptr) {
; CHECK-LABEL: f2:
; CHECK: sqdb %f0, 0(%r2)
; CHECK: br %r14
%val = load double *%ptr
%res = call double @llvm.sqrt.f64(double %val)
ret double %res
}
; Check the high end of the aligned SQDB range.
define double @f3(double *%base) {
; CHECK-LABEL: f3:
; CHECK: sqdb %f0, 4088(%r2)
; CHECK: br %r14
%ptr = getelementptr double *%base, i64 511
%val = load double *%ptr
%res = call double @llvm.sqrt.f64(double %val)
ret double %res
}
; Check the next doubleword up, which needs separate address logic.
; Other sequences besides this one would be OK.
define double @f4(double *%base) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: sqdb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr double *%base, i64 512
%val = load double *%ptr
%res = call double @llvm.sqrt.f64(double %val)
ret double %res
}
; Check negative displacements, which also need separate address logic.
define double @f5(double *%base) {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -8
; CHECK: sqdb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr double *%base, i64 -1
%val = load double *%ptr
%res = call double @llvm.sqrt.f64(double %val)
ret double %res
}
; Check that SQDB allows indices.
define double @f6(double *%base, i64 %index) {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 3
; CHECK: sqdb %f0, 800(%r1,%r2)
; CHECK: br %r14
%ptr1 = getelementptr double *%base, i64 %index
%ptr2 = getelementptr double *%ptr1, i64 100
%val = load double *%ptr2
%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
}
|
