| ; Test extensions of f32 to f128. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| ; Check register extension. |
| define void @f1(ptr %dst, float %val) { |
| ; CHECK-LABEL: 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, ptr %dst |
| ret void |
| } |
| |
| ; Check the low end of the LXEB range. |
| define void @f2(ptr %dst, ptr %ptr) { |
| ; CHECK-LABEL: f2: |
| ; CHECK: lxeb %f0, 0(%r3) |
| ; CHECK: std %f0, 0(%r2) |
| ; CHECK: std %f2, 8(%r2) |
| ; CHECK: br %r14 |
| %val = load float, ptr %ptr |
| %res = fpext float %val to fp128 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check the high end of the aligned LXEB range. |
| define void @f3(ptr %dst, ptr %base) { |
| ; CHECK-LABEL: f3: |
| ; CHECK: lxeb %f0, 4092(%r3) |
| ; CHECK: std %f0, 0(%r2) |
| ; CHECK: std %f2, 8(%r2) |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, ptr %base, i64 1023 |
| %val = load float, ptr %ptr |
| %res = fpext float %val to fp128 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check the next word up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define void @f4(ptr %dst, ptr %base) { |
| ; CHECK-LABEL: 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, ptr %base, i64 1024 |
| %val = load float, ptr %ptr |
| %res = fpext float %val to fp128 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check negative displacements, which also need separate address logic. |
| define void @f5(ptr %dst, ptr %base) { |
| ; CHECK-LABEL: 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, ptr %base, i64 -1 |
| %val = load float, ptr %ptr |
| %res = fpext float %val to fp128 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check that LXEB allows indices. |
| define void @f6(ptr %dst, ptr %base, i64 %index) { |
| ; CHECK-LABEL: 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, ptr %base, i64 %index |
| %ptr2 = getelementptr float, ptr %ptr1, i64 100 |
| %val = load float, ptr %ptr2 |
| %res = fpext float %val to fp128 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Test a case where we spill the source of at least one LXEBR. We want |
| ; to use LXEB if possible. |
| define void @f7(ptr %ptr1, ptr %ptr2) { |
| ; CHECK-LABEL: f7: |
| ; CHECK: lxeb {{%f[0-9]+}}, 16{{[04]}}(%r15) |
| ; CHECK: br %r14 |
| %val0 = load volatile float, ptr %ptr2 |
| %val1 = load volatile float, ptr %ptr2 |
| %val2 = load volatile float, ptr %ptr2 |
| %val3 = load volatile float, ptr %ptr2 |
| %val4 = load volatile float, ptr %ptr2 |
| %val5 = load volatile float, ptr %ptr2 |
| %val6 = load volatile float, ptr %ptr2 |
| %val7 = load volatile float, ptr %ptr2 |
| %val8 = load volatile float, ptr %ptr2 |
| %val9 = load volatile float, ptr %ptr2 |
| %val10 = load volatile float, ptr %ptr2 |
| %val11 = load volatile float, ptr %ptr2 |
| %val12 = load volatile float, ptr %ptr2 |
| %val13 = load volatile float, ptr %ptr2 |
| %val14 = load volatile float, ptr %ptr2 |
| %val15 = load volatile float, ptr %ptr2 |
| %val16 = load volatile float, ptr %ptr2 |
| |
| %ext0 = fpext float %val0 to fp128 |
| %ext1 = fpext float %val1 to fp128 |
| %ext2 = fpext float %val2 to fp128 |
| %ext3 = fpext float %val3 to fp128 |
| %ext4 = fpext float %val4 to fp128 |
| %ext5 = fpext float %val5 to fp128 |
| %ext6 = fpext float %val6 to fp128 |
| %ext7 = fpext float %val7 to fp128 |
| %ext8 = fpext float %val8 to fp128 |
| %ext9 = fpext float %val9 to fp128 |
| %ext10 = fpext float %val10 to fp128 |
| %ext11 = fpext float %val11 to fp128 |
| %ext12 = fpext float %val12 to fp128 |
| %ext13 = fpext float %val13 to fp128 |
| %ext14 = fpext float %val14 to fp128 |
| %ext15 = fpext float %val15 to fp128 |
| %ext16 = fpext float %val16 to fp128 |
| |
| store volatile float %val0, ptr %ptr2 |
| store volatile float %val1, ptr %ptr2 |
| store volatile float %val2, ptr %ptr2 |
| store volatile float %val3, ptr %ptr2 |
| store volatile float %val4, ptr %ptr2 |
| store volatile float %val5, ptr %ptr2 |
| store volatile float %val6, ptr %ptr2 |
| store volatile float %val7, ptr %ptr2 |
| store volatile float %val8, ptr %ptr2 |
| store volatile float %val9, ptr %ptr2 |
| store volatile float %val10, ptr %ptr2 |
| store volatile float %val11, ptr %ptr2 |
| store volatile float %val12, ptr %ptr2 |
| store volatile float %val13, ptr %ptr2 |
| store volatile float %val14, ptr %ptr2 |
| store volatile float %val15, ptr %ptr2 |
| store volatile float %val16, ptr %ptr2 |
| |
| store volatile fp128 %ext0, ptr %ptr1 |
| store volatile fp128 %ext1, ptr %ptr1 |
| store volatile fp128 %ext2, ptr %ptr1 |
| store volatile fp128 %ext3, ptr %ptr1 |
| store volatile fp128 %ext4, ptr %ptr1 |
| store volatile fp128 %ext5, ptr %ptr1 |
| store volatile fp128 %ext6, ptr %ptr1 |
| store volatile fp128 %ext7, ptr %ptr1 |
| store volatile fp128 %ext8, ptr %ptr1 |
| store volatile fp128 %ext9, ptr %ptr1 |
| store volatile fp128 %ext10, ptr %ptr1 |
| store volatile fp128 %ext11, ptr %ptr1 |
| store volatile fp128 %ext12, ptr %ptr1 |
| store volatile fp128 %ext13, ptr %ptr1 |
| store volatile fp128 %ext14, ptr %ptr1 |
| store volatile fp128 %ext15, ptr %ptr1 |
| store volatile fp128 %ext16, ptr %ptr1 |
| |
| ret void |
| } |