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