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; Test strict 32-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=z14 | FileCheck %s
declare float @llvm.experimental.constrained.sqrt.f32(float, metadata, metadata)
; Check register square root.
define float @f1(float %val) {
; CHECK-LABEL: f1:
; CHECK: sqebr %f0, %f0
; CHECK: br %r14
%res = call float @llvm.experimental.constrained.sqrt.f32(
float %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict")
ret float %res
}
; Check the low end of the SQEB range.
define float @f2(float *%ptr) {
; CHECK-LABEL: f2:
; CHECK: sqeb %f0, 0(%r2)
; CHECK: br %r14
%val = load float, float *%ptr
%res = call float @llvm.experimental.constrained.sqrt.f32(
float %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict")
ret float %res
}
; Check the high end of the aligned SQEB range.
define float @f3(float *%base) {
; CHECK-LABEL: f3:
; CHECK: sqeb %f0, 4092(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 1023
%val = load float, float *%ptr
%res = call float @llvm.experimental.constrained.sqrt.f32(
float %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict")
ret float %res
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define float @f4(float *%base) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: sqeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 1024
%val = load float, float *%ptr
%res = call float @llvm.experimental.constrained.sqrt.f32(
float %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict")
ret float %res
}
; Check negative displacements, which also need separate address logic.
define float @f5(float *%base) {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -4
; CHECK: sqeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 -1
%val = load float, float *%ptr
%res = call float @llvm.experimental.constrained.sqrt.f32(
float %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict")
ret float %res
}
; Check that SQEB allows indices.
define float @f6(float *%base, i64 %index) {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 2
; CHECK: sqeb %f0, 400(%r1,%r2)
; CHECK: br %r14
%ptr1 = getelementptr float, float *%base, i64 %index
%ptr2 = getelementptr float, float *%ptr1, i64 100
%val = load float, float *%ptr2
%res = call float @llvm.experimental.constrained.sqrt.f32(
float %val,
metadata !"round.dynamic",
metadata !"fpexcept.strict")
ret float %res
}
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