forked from OSchip/llvm-project
72 lines
1.8 KiB
LLVM
72 lines
1.8 KiB
LLVM
; Test 64-bit floating-point division.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
; Check register division.
|
|
define double @f1(double %f1, double %f2) {
|
|
; CHECK: f1:
|
|
; CHECK: ddbr %f0, %f2
|
|
; CHECK: br %r14
|
|
%res = fdiv double %f1, %f2
|
|
ret double %res
|
|
}
|
|
|
|
; Check the low end of the DDB range.
|
|
define double @f2(double %f1, double *%ptr) {
|
|
; CHECK: f2:
|
|
; CHECK: ddb %f0, 0(%r2)
|
|
; CHECK: br %r14
|
|
%f2 = load double *%ptr
|
|
%res = fdiv double %f1, %f2
|
|
ret double %res
|
|
}
|
|
|
|
; Check the high end of the aligned DDB range.
|
|
define double @f3(double %f1, double *%base) {
|
|
; CHECK: f3:
|
|
; CHECK: ddb %f0, 4088(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr double *%base, i64 511
|
|
%f2 = load double *%ptr
|
|
%res = fdiv 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: ddb %f0, 0(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr double *%base, i64 512
|
|
%f2 = load double *%ptr
|
|
%res = fdiv 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: ddb %f0, 0(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr double *%base, i64 -1
|
|
%f2 = load double *%ptr
|
|
%res = fdiv double %f1, %f2
|
|
ret double %res
|
|
}
|
|
|
|
; Check that DDB allows indices.
|
|
define double @f6(double %f1, double *%base, i64 %index) {
|
|
; CHECK: f6:
|
|
; CHECK: sllg %r1, %r3, 3
|
|
; CHECK: ddb %f0, 800(%r1,%r2)
|
|
; CHECK: br %r14
|
|
%ptr1 = getelementptr double *%base, i64 %index
|
|
%ptr2 = getelementptr double *%ptr1, i64 100
|
|
%f2 = load double *%ptr2
|
|
%res = fdiv double %f1, %f2
|
|
ret double %res
|
|
}
|