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|
; Test multiplication of two f64s, producing an f128 result.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare double @foo()
; Check register multiplication. "mxdbr %f0, %f2" is not valid from LLVM's
; point of view, because %f2 is the low register of the FP128 %f0. Pass the
; multiplier in %f4 instead.
define void @f1(double %f1, double %dummy, double %f2, fp128 *%dst) {
; CHECK-LABEL: f1:
; CHECK: mxdbr %f0, %f4
; CHECK: std %f0, 0(%r2)
; CHECK: std %f2, 8(%r2)
; CHECK: br %r14
%f1x = fpext double %f1 to fp128
%f2x = fpext double %f2 to fp128
%res = fmul fp128 %f1x, %f2x
store fp128 %res, fp128 *%dst
ret void
}
; Check the low end of the MXDB range.
define void @f2(double %f1, double *%ptr, fp128 *%dst) {
; CHECK-LABEL: f2:
; CHECK: mxdb %f0, 0(%r2)
; CHECK: std %f0, 0(%r3)
; CHECK: std %f2, 8(%r3)
; CHECK: br %r14
%f2 = load double, double *%ptr
%f1x = fpext double %f1 to fp128
%f2x = fpext double %f2 to fp128
%res = fmul fp128 %f1x, %f2x
store fp128 %res, fp128 *%dst
ret void
}
; Check the high end of the aligned MXDB range.
define void @f3(double %f1, double *%base, fp128 *%dst) {
; CHECK-LABEL: f3:
; CHECK: mxdb %f0, 4088(%r2)
; CHECK: std %f0, 0(%r3)
; CHECK: std %f2, 8(%r3)
; CHECK: br %r14
%ptr = getelementptr double, double *%base, i64 511
%f2 = load double, double *%ptr
%f1x = fpext double %f1 to fp128
%f2x = fpext double %f2 to fp128
%res = fmul fp128 %f1x, %f2x
store fp128 %res, fp128 *%dst
ret void
}
; Check the next doubleword up, which needs separate address logic.
; Other sequences besides this one would be OK.
define void @f4(double %f1, double *%base, fp128 *%dst) {
; CHECK-LABEL: f4:
; CHECK: aghi %r2, 4096
; CHECK: mxdb %f0, 0(%r2)
; CHECK: std %f0, 0(%r3)
; CHECK: std %f2, 8(%r3)
; CHECK: br %r14
%ptr = getelementptr double, double *%base, i64 512
%f2 = load double, double *%ptr
%f1x = fpext double %f1 to fp128
%f2x = fpext double %f2 to fp128
%res = fmul fp128 %f1x, %f2x
store fp128 %res, fp128 *%dst
ret void
}
; Check negative displacements, which also need separate address logic.
define void @f5(double %f1, double *%base, fp128 *%dst) {
; CHECK-LABEL: f5:
; CHECK: aghi %r2, -8
; CHECK: mxdb %f0, 0(%r2)
; CHECK: std %f0, 0(%r3)
; CHECK: std %f2, 8(%r3)
; CHECK: br %r14
%ptr = getelementptr double, double *%base, i64 -1
%f2 = load double, double *%ptr
%f1x = fpext double %f1 to fp128
%f2x = fpext double %f2 to fp128
%res = fmul fp128 %f1x, %f2x
store fp128 %res, fp128 *%dst
ret void
}
; Check that MXDB allows indices.
define void @f6(double %f1, double *%base, i64 %index, fp128 *%dst) {
; CHECK-LABEL: f6:
; CHECK: sllg %r1, %r3, 3
; CHECK: mxdb %f0, 800(%r1,%r2)
; CHECK: std %f0, 0(%r4)
; CHECK: std %f2, 8(%r4)
; CHECK: br %r14
%ptr1 = getelementptr double, double *%base, i64 %index
%ptr2 = getelementptr double, double *%ptr1, i64 100
%f2 = load double, double *%ptr2
%f1x = fpext double %f1 to fp128
%f2x = fpext double %f2 to fp128
%res = fmul fp128 %f1x, %f2x
store fp128 %res, fp128 *%dst
ret void
}
; Check that multiplications of spilled values can use MXDB rather than MXDBR.
define double @f7(double *%ptr0) {
; CHECK-LABEL: f7:
; CHECK: brasl %r14, foo@PLT
; CHECK: mxdb %f0, 160(%r15)
; CHECK: br %r14
%ptr1 = getelementptr double, double *%ptr0, i64 2
%ptr2 = getelementptr double, double *%ptr0, i64 4
%ptr3 = getelementptr double, double *%ptr0, i64 6
%ptr4 = getelementptr double, double *%ptr0, i64 8
%ptr5 = getelementptr double, double *%ptr0, i64 10
%ptr6 = getelementptr double, double *%ptr0, i64 12
%ptr7 = getelementptr double, double *%ptr0, i64 14
%ptr8 = getelementptr double, double *%ptr0, i64 16
%ptr9 = getelementptr double, double *%ptr0, i64 18
%ptr10 = getelementptr double, double *%ptr0, i64 20
%val0 = load double, double *%ptr0
%val1 = load double, double *%ptr1
%val2 = load double, double *%ptr2
%val3 = load double, double *%ptr3
%val4 = load double, double *%ptr4
%val5 = load double, double *%ptr5
%val6 = load double, double *%ptr6
%val7 = load double, double *%ptr7
%val8 = load double, double *%ptr8
%val9 = load double, double *%ptr9
%val10 = load double, double *%ptr10
%frob0 = fadd double %val0, %val0
%frob1 = fadd double %val1, %val1
%frob2 = fadd double %val2, %val2
%frob3 = fadd double %val3, %val3
%frob4 = fadd double %val4, %val4
%frob5 = fadd double %val5, %val5
%frob6 = fadd double %val6, %val6
%frob7 = fadd double %val7, %val7
%frob8 = fadd double %val8, %val8
%frob9 = fadd double %val9, %val9
%frob10 = fadd double %val9, %val10
store double %frob0, double *%ptr0
store double %frob1, double *%ptr1
store double %frob2, double *%ptr2
store double %frob3, double *%ptr3
store double %frob4, double *%ptr4
store double %frob5, double *%ptr5
store double %frob6, double *%ptr6
store double %frob7, double *%ptr7
store double %frob8, double *%ptr8
store double %frob9, double *%ptr9
store double %frob10, double *%ptr10
%ret = call double @foo()
%accext0 = fpext double %ret to fp128
%ext0 = fpext double %frob0 to fp128
%mul0 = fmul fp128 %accext0, %ext0
%const0 = fpext double 1.01 to fp128
%extra0 = fmul fp128 %mul0, %const0
%trunc0 = fptrunc fp128 %extra0 to double
%accext1 = fpext double %trunc0 to fp128
%ext1 = fpext double %frob1 to fp128
%mul1 = fmul fp128 %accext1, %ext1
%const1 = fpext double 1.11 to fp128
%extra1 = fmul fp128 %mul1, %const1
%trunc1 = fptrunc fp128 %extra1 to double
%accext2 = fpext double %trunc1 to fp128
%ext2 = fpext double %frob2 to fp128
%mul2 = fmul fp128 %accext2, %ext2
%const2 = fpext double 1.21 to fp128
%extra2 = fmul fp128 %mul2, %const2
%trunc2 = fptrunc fp128 %extra2 to double
%accext3 = fpext double %trunc2 to fp128
%ext3 = fpext double %frob3 to fp128
%mul3 = fmul fp128 %accext3, %ext3
%const3 = fpext double 1.31 to fp128
%extra3 = fmul fp128 %mul3, %const3
%trunc3 = fptrunc fp128 %extra3 to double
%accext4 = fpext double %trunc3 to fp128
%ext4 = fpext double %frob4 to fp128
%mul4 = fmul fp128 %accext4, %ext4
%const4 = fpext double 1.41 to fp128
%extra4 = fmul fp128 %mul4, %const4
%trunc4 = fptrunc fp128 %extra4 to double
%accext5 = fpext double %trunc4 to fp128
%ext5 = fpext double %frob5 to fp128
%mul5 = fmul fp128 %accext5, %ext5
%const5 = fpext double 1.51 to fp128
%extra5 = fmul fp128 %mul5, %const5
%trunc5 = fptrunc fp128 %extra5 to double
%accext6 = fpext double %trunc5 to fp128
%ext6 = fpext double %frob6 to fp128
%mul6 = fmul fp128 %accext6, %ext6
%const6 = fpext double 1.61 to fp128
%extra6 = fmul fp128 %mul6, %const6
%trunc6 = fptrunc fp128 %extra6 to double
%accext7 = fpext double %trunc6 to fp128
%ext7 = fpext double %frob7 to fp128
%mul7 = fmul fp128 %accext7, %ext7
%const7 = fpext double 1.71 to fp128
%extra7 = fmul fp128 %mul7, %const7
%trunc7 = fptrunc fp128 %extra7 to double
%accext8 = fpext double %trunc7 to fp128
%ext8 = fpext double %frob8 to fp128
%mul8 = fmul fp128 %accext8, %ext8
%const8 = fpext double 1.81 to fp128
%extra8 = fmul fp128 %mul8, %const8
%trunc8 = fptrunc fp128 %extra8 to double
%accext9 = fpext double %trunc8 to fp128
%ext9 = fpext double %frob9 to fp128
%mul9 = fmul fp128 %accext9, %ext9
%const9 = fpext double 1.91 to fp128
%extra9 = fmul fp128 %mul9, %const9
%trunc9 = fptrunc fp128 %extra9 to double
ret double %trunc9
}
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