| ; Test strict extensions of f32 to f128. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| |
| declare fp128 @llvm.experimental.constrained.fpext.f128.f32(float, metadata) |
| |
| ; Check register extension. |
| define void @f1(ptr %dst, float %val) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK: lxebr %f0, %f0 |
| ; CHECK: std %f0, 0(%r2) |
| ; CHECK: std %f2, 8(%r2) |
| ; CHECK: br %r14 |
| %res = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val, |
| metadata !"fpexcept.strict") #0 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check the low end of the LXEB range. |
| define void @f2(ptr %dst, ptr %ptr) #0 { |
| ; 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 = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val, |
| metadata !"fpexcept.strict") #0 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check the high end of the aligned LXEB range. |
| define void @f3(ptr %dst, ptr %base) #0 { |
| ; 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 = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val, |
| metadata !"fpexcept.strict") #0 |
| 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) #0 { |
| ; 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 = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val, |
| metadata !"fpexcept.strict") #0 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check negative displacements, which also need separate address logic. |
| define void @f5(ptr %dst, ptr %base) #0 { |
| ; 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 = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val, |
| metadata !"fpexcept.strict") #0 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| ; Check that LXEB allows indices. |
| define void @f6(ptr %dst, ptr %base, i64 %index) #0 { |
| ; 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 = call fp128 @llvm.experimental.constrained.fpext.f128.f32(float %val, |
| metadata !"fpexcept.strict") #0 |
| store fp128 %res, ptr %dst |
| ret void |
| } |
| |
| attributes #0 = { strictfp } |