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| ; Test strict 64-bit square root.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
declare double @llvm.experimental.constrained.sqrt.f64(double, metadata, metadata)
; Check register square root.
define double @f1(double %val) #0 {
; CHECK-LABEL: f1:
; CHECK: sqdbr %f0, %f0
; CHECK: br %r14
%res = call double @llvm.experimental.constrained.sqrt.f64(
double %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict") #0
ret double %res
}
; Check the low end of the SQDB range.
define double @f2(double *%ptr) #0 {
; CHECK-LABEL: f2:
; CHECK: sqdb %f0, 0(%r2)
; CHECK: br %r14
%val = load double, double *%ptr
%res = call double @llvm.experimental.constrained.sqrt.f64(
double %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict") #0
ret double %res
}
; Check the high end of the aligned SQDB range.
define double @f3(double *%base) #0 {
; CHECK-LABEL: f3:
; CHECK: sqdb %f0, 4088(%r2)
; CHECK: br %r14
%ptr = getelementptr double, double *%base, i64 511
%val = load double, double *%ptr
%res = call double @llvm.experimental.constrained.sqrt.f64(
double %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict") #0
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) #0 {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: sqdb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr double, double *%base, i64 512
%val = load double, double *%ptr
%res = call double @llvm.experimental.constrained.sqrt.f64(
double %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict") #0
ret double %res
}
; Check negative displacements, which also need separate address logic.
define double @f5(double *%base) #0 {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -8
; CHECK: sqdb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr double, double *%base, i64 -1
%val = load double, double *%ptr
%res = call double @llvm.experimental.constrained.sqrt.f64(
double %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict") #0
ret double %res
}
; Check that SQDB allows indices.
define double @f6(double *%base, i64 %index) #0 {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 3
; CHECK: sqdb %f0, 800(%r1,%r2)
; CHECK: br %r14
%ptr1 = getelementptr double, double *%base, i64 %index
%ptr2 = getelementptr double, double *%ptr1, i64 100
%val = load double, double *%ptr2
%res = call double @llvm.experimental.constrained.sqrt.f64(
double %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict") #0
ret double %res
}
attributes #0 = { strictfp }
|