mirror of
https://github.com/c64scene-ar/llvm-6502.git
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90 lines
2.2 KiB
LLVM
90 lines
2.2 KiB
LLVM
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; Test extensions of f32 to f128.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check register extension.
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define void @f1(fp128 *%dst, float %val) {
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; CHECK: f1:
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; CHECK: lxebr %f0, %f0
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%res = fpext float %val to fp128
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check the low end of the LXEB range.
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define void @f2(fp128 *%dst, float *%ptr) {
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; CHECK: f2:
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; CHECK: lxeb %f0, 0(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%val = load float *%ptr
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%res = fpext float %val to fp128
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check the high end of the aligned LXEB range.
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define void @f3(fp128 *%dst, float *%base) {
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; CHECK: f3:
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; CHECK: lxeb %f0, 4092(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 1023
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%val = load float *%ptr
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%res = fpext float %val to fp128
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check the next word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f4(fp128 *%dst, float *%base) {
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; CHECK: f4:
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; CHECK: aghi %r3, 4096
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; CHECK: lxeb %f0, 0(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 1024
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%val = load float *%ptr
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%res = fpext float %val to fp128
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check negative displacements, which also need separate address logic.
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define void @f5(fp128 *%dst, float *%base) {
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; CHECK: f5:
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; CHECK: aghi %r3, -4
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; CHECK: lxeb %f0, 0(%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr = getelementptr float *%base, i64 -1
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%val = load float *%ptr
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%res = fpext float %val to fp128
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store fp128 %res, fp128 *%dst
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ret void
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}
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; Check that LXEB allows indices.
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define void @f6(fp128 *%dst, float *%base, i64 %index) {
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; CHECK: f6:
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; CHECK: sllg %r1, %r4, 2
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; CHECK: lxeb %f0, 400(%r1,%r3)
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; CHECK: std %f0, 0(%r2)
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; CHECK: std %f2, 8(%r2)
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; CHECK: br %r14
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%ptr1 = getelementptr float *%base, i64 %index
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%ptr2 = getelementptr float *%ptr1, i64 100
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%val = load float *%ptr2
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%res = fpext float %val to fp128
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store fp128 %res, fp128 *%dst
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ret void
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}
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