fp-mul-01.ll
3.52 KB
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; Test multiplication of two f32s, producing an f32 result.
;
; 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 @foo()
; Check register multiplication.
define float @f1(float %f1, float %f2) {
; CHECK-LABEL: f1:
; CHECK: meebr %f0, %f2
; CHECK: br %r14
%res = fmul float %f1, %f2
ret float %res
}
; Check the low end of the MEEB range.
define float @f2(float %f1, float *%ptr) {
; CHECK-LABEL: f2:
; CHECK: meeb %f0, 0(%r2)
; CHECK: br %r14
%f2 = load float, float *%ptr
%res = fmul float %f1, %f2
ret float %res
}
; Check the high end of the aligned MEEB range.
define float @f3(float %f1, float *%base) {
; CHECK-LABEL: f3:
; CHECK: meeb %f0, 4092(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 1023
%f2 = load float, float *%ptr
%res = fmul float %f1, %f2
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 %f1, float *%base) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: meeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 1024
%f2 = load float, float *%ptr
%res = fmul float %f1, %f2
ret float %res
}
; Check negative displacements, which also need separate address logic.
define float @f5(float %f1, float *%base) {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -4
; CHECK: meeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 -1
%f2 = load float, float *%ptr
%res = fmul float %f1, %f2
ret float %res
}
; Check that MEEB allows indices.
define float @f6(float %f1, float *%base, i64 %index) {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 2
; CHECK: meeb %f0, 400(%r1,%r2)
; CHECK: br %r14
%ptr1 = getelementptr float, float *%base, i64 %index
%ptr2 = getelementptr float, float *%ptr1, i64 100
%f2 = load float, float *%ptr2
%res = fmul float %f1, %f2
ret float %res
}
; Check that multiplications of spilled values can use MEEB rather than MEEBR.
define float @f7(float *%ptr0) {
; CHECK-LABEL: f7:
; CHECK: brasl %r14, foo@PLT
; CHECK-SCALAR: meeb %f0, 16{{[04]}}(%r15)
; CHECK: br %r14
%ptr1 = getelementptr float, float *%ptr0, i64 2
%ptr2 = getelementptr float, float *%ptr0, i64 4
%ptr3 = getelementptr float, float *%ptr0, i64 6
%ptr4 = getelementptr float, float *%ptr0, i64 8
%ptr5 = getelementptr float, float *%ptr0, i64 10
%ptr6 = getelementptr float, float *%ptr0, i64 12
%ptr7 = getelementptr float, float *%ptr0, i64 14
%ptr8 = getelementptr float, float *%ptr0, i64 16
%ptr9 = getelementptr float, float *%ptr0, i64 18
%ptr10 = getelementptr float, float *%ptr0, i64 20
%val0 = load float, float *%ptr0
%val1 = load float, float *%ptr1
%val2 = load float, float *%ptr2
%val3 = load float, float *%ptr3
%val4 = load float, float *%ptr4
%val5 = load float, float *%ptr5
%val6 = load float, float *%ptr6
%val7 = load float, float *%ptr7
%val8 = load float, float *%ptr8
%val9 = load float, float *%ptr9
%val10 = load float, float *%ptr10
%ret = call float @foo()
%mul0 = fmul float %ret, %val0
%mul1 = fmul float %mul0, %val1
%mul2 = fmul float %mul1, %val2
%mul3 = fmul float %mul2, %val3
%mul4 = fmul float %mul3, %val4
%mul5 = fmul float %mul4, %val5
%mul6 = fmul float %mul5, %val6
%mul7 = fmul float %mul6, %val7
%mul8 = fmul float %mul7, %val8
%mul9 = fmul float %mul8, %val9
%mul10 = fmul float %mul9, %val10
ret float %mul10
}