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; Test 64-bit floating-point addition.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Check register addition.
define double @f1(double %f1, double %f2) {
; CHECK: f1:
; CHECK: adbr %f0, %f2
; CHECK: br %r14
%res = fadd double %f1, %f2
ret double %res
}
; Check the low end of the ADB range.
define double @f2(double %f1, double *%ptr) {
; CHECK: f2:
; CHECK: adb %f0, 0(%r2)
; CHECK: br %r14
%f2 = load double *%ptr
%res = fadd double %f1, %f2
ret double %res
}
; Check the high end of the aligned ADB range.
define double @f3(double %f1, double *%base) {
; CHECK: f3:
; CHECK: adb %f0, 4088(%r2)
; CHECK: br %r14
%ptr = getelementptr double *%base, i64 511
%f2 = load double *%ptr
%res = fadd double %f1, %f2
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 %f1, double *%base) {
; CHECK: f4:
; CHECK: aghi %r2, 4096
; CHECK: adb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr double *%base, i64 512
%f2 = load double *%ptr
%res = fadd double %f1, %f2
ret double %res
}
; Check negative displacements, which also need separate address logic.
define double @f5(double %f1, double *%base) {
; CHECK: f5:
; CHECK: aghi %r2, -8
; CHECK: adb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr double *%base, i64 -1
%f2 = load double *%ptr
%res = fadd double %f1, %f2
ret double %res
}
; Check that ADB allows indices.
define double @f6(double %f1, double *%base, i64 %index) {
; CHECK: f6:
; CHECK: sllg %r1, %r3, 3
; CHECK: adb %f0, 800(%r1,%r2)
; CHECK: br %r14
%ptr1 = getelementptr double *%base, i64 %index
%ptr2 = getelementptr double *%ptr1, i64 100
%f2 = load double *%ptr2
%res = fadd double %f1, %f2
ret double %res
}
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