; Test multiplication of two f32s, producing an f64 result.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare float @foo()
; Check register multiplication.
define double @f1(float %f1, float %f2) {
; CHECK-LABEL: f1:
; CHECK: mdebr %f0, %f2
; CHECK: br %r14
%f1x = fpext float %f1 to double
%f2x = fpext float %f2 to double
%res = fmul double %f1x, %f2x
ret double %res
}
; Check the low end of the MDEB range.
define double @f2(float %f1, float *%ptr) {
; CHECK-LABEL: f2:
; CHECK: mdeb %f0, 0(%r2)
; CHECK: br %r14
%f2 = load float, float *%ptr
%f1x = fpext float %f1 to double
%f2x = fpext float %f2 to double
%res = fmul double %f1x, %f2x
ret double %res
}
; Check the high end of the aligned MDEB range.
define double @f3(float %f1, float *%base) {
; CHECK-LABEL: f3:
; CHECK: mdeb %f0, 4092(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 1023
%f2 = load float, float *%ptr
%f1x = fpext float %f1 to double
%f2x = fpext float %f2 to double
%res = fmul double %f1x, %f2x
ret double %res
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define double @f4(float %f1, float *%base) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: mdeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 1024
%f2 = load float, float *%ptr
%f1x = fpext float %f1 to double
%f2x = fpext float %f2 to double
%res = fmul double %f1x, %f2x
ret double %res
}
; Check negative displacements, which also need separate address logic.
define double @f5(float %f1, float *%base) {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -4
; CHECK: mdeb %f0, 0(%r2)
; CHECK: br %r14
%ptr = getelementptr float, float *%base, i64 -1
%f2 = load float, float *%ptr
%f1x = fpext float %f1 to double
%f2x = fpext float %f2 to double
%res = fmul double %f1x, %f2x
ret double %res
}
; Check that MDEB allows indices.
define double @f6(float %f1, float *%base, i64 %index) {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 2
; CHECK: mdeb %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
%f1x = fpext float %f1 to double
%f2x = fpext float %f2 to double
%res = fmul double %f1x, %f2x
ret double %res
}
; Check that multiplications of spilled values can use MDEB rather than MDEBR.
define float @f7(float *%ptr0) {
; CHECK-LABEL: f7:
; CHECK: brasl %r14, foo@PLT
; CHECK: mdeb %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
%frob0 = fadd float %val0, %val0
%frob1 = fadd float %val1, %val1
%frob2 = fadd float %val2, %val2
%frob3 = fadd float %val3, %val3
%frob4 = fadd float %val4, %val4
%frob5 = fadd float %val5, %val5
%frob6 = fadd float %val6, %val6
%frob7 = fadd float %val7, %val7
%frob8 = fadd float %val8, %val8
%frob9 = fadd float %val9, %val9
%frob10 = fadd float %val9, %val10
store float %frob0, float *%ptr0
store float %frob1, float *%ptr1
store float %frob2, float *%ptr2
store float %frob3, float *%ptr3
store float %frob4, float *%ptr4
store float %frob5, float *%ptr5
store float %frob6, float *%ptr6
store float %frob7, float *%ptr7
store float %frob8, float *%ptr8
store float %frob9, float *%ptr9
store float %frob10, float *%ptr10
%ret = call float @foo()
%accext0 = fpext float %ret to double
%ext0 = fpext float %frob0 to double
%mul0 = fmul double %accext0, %ext0
%extra0 = fmul double %mul0, 1.01
%trunc0 = fptrunc double %extra0 to float
%accext1 = fpext float %trunc0 to double
%ext1 = fpext float %frob1 to double
%mul1 = fmul double %accext1, %ext1
%extra1 = fmul double %mul1, 1.11
%trunc1 = fptrunc double %extra1 to float
%accext2 = fpext float %trunc1 to double
%ext2 = fpext float %frob2 to double
%mul2 = fmul double %accext2, %ext2
%extra2 = fmul double %mul2, 1.21
%trunc2 = fptrunc double %extra2 to float
%accext3 = fpext float %trunc2 to double
%ext3 = fpext float %frob3 to double
%mul3 = fmul double %accext3, %ext3
%extra3 = fmul double %mul3, 1.31
%trunc3 = fptrunc double %extra3 to float
%accext4 = fpext float %trunc3 to double
%ext4 = fpext float %frob4 to double
%mul4 = fmul double %accext4, %ext4
%extra4 = fmul double %mul4, 1.41
%trunc4 = fptrunc double %extra4 to float
%accext5 = fpext float %trunc4 to double
%ext5 = fpext float %frob5 to double
%mul5 = fmul double %accext5, %ext5
%extra5 = fmul double %mul5, 1.51
%trunc5 = fptrunc double %extra5 to float
%accext6 = fpext float %trunc5 to double
%ext6 = fpext float %frob6 to double
%mul6 = fmul double %accext6, %ext6
%extra6 = fmul double %mul6, 1.61
%trunc6 = fptrunc double %extra6 to float
%accext7 = fpext float %trunc6 to double
%ext7 = fpext float %frob7 to double
%mul7 = fmul double %accext7, %ext7
%extra7 = fmul double %mul7, 1.71
%trunc7 = fptrunc double %extra7 to float
%accext8 = fpext float %trunc7 to double
%ext8 = fpext float %frob8 to double
%mul8 = fmul double %accext8, %ext8
%extra8 = fmul double %mul8, 1.81
%trunc8 = fptrunc double %extra8 to float
%accext9 = fpext float %trunc8 to double
%ext9 = fpext float %frob9 to double
%mul9 = fmul double %accext9, %ext9
%extra9 = fmul double %mul9, 1.91
%trunc9 = fptrunc double %extra9 to float
ret float %trunc9
}