mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-01 19:29:22 +00:00
Add a mapping from register-based <INSN>R instructions to the corresponding memory-based <INSN>. Use it to cut down on the number of spill loads. Some instructions extend their operands from smaller fields, so this required a new TSFlags field to say how big the unextended operand is. This optimisation doesn't trigger for C(G)R and CL(G)R because in practice we always combine those instructions with a branch. Adding a test for every other case probably seems excessive, but it did catch a missed optimisation for DSGF (fixed in r185435). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185529 91177308-0d34-0410-b5e6-96231b3b80d8
171 lines
5.2 KiB
LLVM
171 lines
5.2 KiB
LLVM
; Test extensions of f64 to f128.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
; Check register extension.
|
|
define void @f1(fp128 *%dst, double %val) {
|
|
; CHECK: f1:
|
|
; CHECK: lxdbr %f0, %f0
|
|
; CHECK: std %f0, 0(%r2)
|
|
; CHECK: std %f2, 8(%r2)
|
|
; CHECK: br %r14
|
|
%res = fpext double %val to fp128
|
|
store fp128 %res, fp128 *%dst
|
|
ret void
|
|
}
|
|
|
|
; Check the low end of the LXDB range.
|
|
define void @f2(fp128 *%dst, double *%ptr) {
|
|
; CHECK: f2:
|
|
; CHECK: lxdb %f0, 0(%r3)
|
|
; CHECK: std %f0, 0(%r2)
|
|
; CHECK: std %f2, 8(%r2)
|
|
; CHECK: br %r14
|
|
%val = load double *%ptr
|
|
%res = fpext double %val to fp128
|
|
store fp128 %res, fp128 *%dst
|
|
ret void
|
|
}
|
|
|
|
; Check the high end of the aligned LXDB range.
|
|
define void @f3(fp128 *%dst, double *%base) {
|
|
; CHECK: f3:
|
|
; CHECK: lxdb %f0, 4088(%r3)
|
|
; CHECK: std %f0, 0(%r2)
|
|
; CHECK: std %f2, 8(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr double *%base, i64 511
|
|
%val = load double *%ptr
|
|
%res = fpext double %val to fp128
|
|
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(fp128 *%dst, double *%base) {
|
|
; CHECK: f4:
|
|
; CHECK: aghi %r3, 4096
|
|
; CHECK: lxdb %f0, 0(%r3)
|
|
; CHECK: std %f0, 0(%r2)
|
|
; CHECK: std %f2, 8(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr double *%base, i64 512
|
|
%val = load double *%ptr
|
|
%res = fpext double %val to fp128
|
|
store fp128 %res, fp128 *%dst
|
|
ret void
|
|
}
|
|
|
|
; Check negative displacements, which also need separate address logic.
|
|
define void @f5(fp128 *%dst, double *%base) {
|
|
; CHECK: f5:
|
|
; CHECK: aghi %r3, -8
|
|
; CHECK: lxdb %f0, 0(%r3)
|
|
; CHECK: std %f0, 0(%r2)
|
|
; CHECK: std %f2, 8(%r2)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr double *%base, i64 -1
|
|
%val = load double *%ptr
|
|
%res = fpext double %val to fp128
|
|
store fp128 %res, fp128 *%dst
|
|
ret void
|
|
}
|
|
|
|
; Check that LXDB allows indices.
|
|
define void @f6(fp128 *%dst, double *%base, i64 %index) {
|
|
; CHECK: f6:
|
|
; CHECK: sllg %r1, %r4, 3
|
|
; CHECK: lxdb %f0, 800(%r1,%r3)
|
|
; CHECK: std %f0, 0(%r2)
|
|
; CHECK: std %f2, 8(%r2)
|
|
; CHECK: br %r14
|
|
%ptr1 = getelementptr double *%base, i64 %index
|
|
%ptr2 = getelementptr double *%ptr1, i64 100
|
|
%val = load double *%ptr2
|
|
%res = fpext double %val to fp128
|
|
store fp128 %res, fp128 *%dst
|
|
ret void
|
|
}
|
|
|
|
; Test a case where we spill the source of at least one LXDBR. We want
|
|
; to use LXDB if possible.
|
|
define void @f7(fp128 *%ptr1, double *%ptr2) {
|
|
; CHECK: f7:
|
|
; CHECK: lxdb {{%f[0-9]+}}, 160(%r15)
|
|
; CHECK: br %r14
|
|
%val0 = load volatile double *%ptr2
|
|
%val1 = load volatile double *%ptr2
|
|
%val2 = load volatile double *%ptr2
|
|
%val3 = load volatile double *%ptr2
|
|
%val4 = load volatile double *%ptr2
|
|
%val5 = load volatile double *%ptr2
|
|
%val6 = load volatile double *%ptr2
|
|
%val7 = load volatile double *%ptr2
|
|
%val8 = load volatile double *%ptr2
|
|
%val9 = load volatile double *%ptr2
|
|
%val10 = load volatile double *%ptr2
|
|
%val11 = load volatile double *%ptr2
|
|
%val12 = load volatile double *%ptr2
|
|
%val13 = load volatile double *%ptr2
|
|
%val14 = load volatile double *%ptr2
|
|
%val15 = load volatile double *%ptr2
|
|
%val16 = load volatile double *%ptr2
|
|
|
|
%ext0 = fpext double %val0 to fp128
|
|
%ext1 = fpext double %val1 to fp128
|
|
%ext2 = fpext double %val2 to fp128
|
|
%ext3 = fpext double %val3 to fp128
|
|
%ext4 = fpext double %val4 to fp128
|
|
%ext5 = fpext double %val5 to fp128
|
|
%ext6 = fpext double %val6 to fp128
|
|
%ext7 = fpext double %val7 to fp128
|
|
%ext8 = fpext double %val8 to fp128
|
|
%ext9 = fpext double %val9 to fp128
|
|
%ext10 = fpext double %val10 to fp128
|
|
%ext11 = fpext double %val11 to fp128
|
|
%ext12 = fpext double %val12 to fp128
|
|
%ext13 = fpext double %val13 to fp128
|
|
%ext14 = fpext double %val14 to fp128
|
|
%ext15 = fpext double %val15 to fp128
|
|
%ext16 = fpext double %val16 to fp128
|
|
|
|
store volatile double %val0, double *%ptr2
|
|
store volatile double %val1, double *%ptr2
|
|
store volatile double %val2, double *%ptr2
|
|
store volatile double %val3, double *%ptr2
|
|
store volatile double %val4, double *%ptr2
|
|
store volatile double %val5, double *%ptr2
|
|
store volatile double %val6, double *%ptr2
|
|
store volatile double %val7, double *%ptr2
|
|
store volatile double %val8, double *%ptr2
|
|
store volatile double %val9, double *%ptr2
|
|
store volatile double %val10, double *%ptr2
|
|
store volatile double %val11, double *%ptr2
|
|
store volatile double %val12, double *%ptr2
|
|
store volatile double %val13, double *%ptr2
|
|
store volatile double %val14, double *%ptr2
|
|
store volatile double %val15, double *%ptr2
|
|
store volatile double %val16, double *%ptr2
|
|
|
|
store volatile fp128 %ext0, fp128 *%ptr1
|
|
store volatile fp128 %ext1, fp128 *%ptr1
|
|
store volatile fp128 %ext2, fp128 *%ptr1
|
|
store volatile fp128 %ext3, fp128 *%ptr1
|
|
store volatile fp128 %ext4, fp128 *%ptr1
|
|
store volatile fp128 %ext5, fp128 *%ptr1
|
|
store volatile fp128 %ext6, fp128 *%ptr1
|
|
store volatile fp128 %ext7, fp128 *%ptr1
|
|
store volatile fp128 %ext8, fp128 *%ptr1
|
|
store volatile fp128 %ext9, fp128 *%ptr1
|
|
store volatile fp128 %ext10, fp128 *%ptr1
|
|
store volatile fp128 %ext11, fp128 *%ptr1
|
|
store volatile fp128 %ext12, fp128 *%ptr1
|
|
store volatile fp128 %ext13, fp128 *%ptr1
|
|
store volatile fp128 %ext14, fp128 *%ptr1
|
|
store volatile fp128 %ext15, fp128 *%ptr1
|
|
store volatile fp128 %ext16, fp128 *%ptr1
|
|
|
|
ret void
|
|
}
|