| ; Test strict 32-bit square root. |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \ |
| ; RUN: | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s |
| |
| declare float @llvm.experimental.constrained.sqrt.f32(float, metadata, metadata) |
| |
| ; Check register square root. |
| define float @f1(float %val) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK: sqebr %f0, %f0 |
| ; CHECK: br %r14 |
| %res = call float @llvm.experimental.constrained.sqrt.f32( |
| float %val, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") #0 |
| ret float %res |
| } |
| |
| ; Check the low end of the SQEB range. |
| define float @f2(float *%ptr) #0 { |
| ; CHECK-LABEL: f2: |
| ; CHECK: sqeb %f0, 0(%r2) |
| ; CHECK: br %r14 |
| %val = load float, float *%ptr |
| %res = call float @llvm.experimental.constrained.sqrt.f32( |
| float %val, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") #0 |
| ret float %res |
| } |
| |
| ; Check the high end of the aligned SQEB range. |
| define float @f3(float *%base) #0 { |
| ; CHECK-LABEL: f3: |
| ; CHECK: sqeb %f0, 4092(%r2) |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, float *%base, i64 1023 |
| %val = load float, float *%ptr |
| %res = call float @llvm.experimental.constrained.sqrt.f32( |
| float %val, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") #0 |
| ret float %res |
| } |
| |
| ; Check the next word up, which needs separate address logic. |
| ; Other sequences besides this one would be OK. |
| define float @f4(float *%base) #0 { |
| ; CHECK-LABEL: f4: |
| ; CHECK: aghi %r2, 4096 |
| ; CHECK: sqeb %f0, 0(%r2) |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, float *%base, i64 1024 |
| %val = load float, float *%ptr |
| %res = call float @llvm.experimental.constrained.sqrt.f32( |
| float %val, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") #0 |
| ret float %res |
| } |
| |
| ; Check negative displacements, which also need separate address logic. |
| define float @f5(float *%base) #0 { |
| ; CHECK-LABEL: f5: |
| ; CHECK: aghi %r2, -4 |
| ; CHECK: sqeb %f0, 0(%r2) |
| ; CHECK: br %r14 |
| %ptr = getelementptr float, float *%base, i64 -1 |
| %val = load float, float *%ptr |
| %res = call float @llvm.experimental.constrained.sqrt.f32( |
| float %val, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") #0 |
| ret float %res |
| } |
| |
| ; Check that SQEB allows indices. |
| define float @f6(float *%base, i64 %index) #0 { |
| ; CHECK-LABEL: f6: |
| ; CHECK: sllg %r1, %r3, 2 |
| ; CHECK: sqeb %f0, 400(%r1,%r2) |
| ; CHECK: br %r14 |
| %ptr1 = getelementptr float, float *%base, i64 %index |
| %ptr2 = getelementptr float, float *%ptr1, i64 100 |
| %val = load float, float *%ptr2 |
| %res = call float @llvm.experimental.constrained.sqrt.f32( |
| float %val, |
| metadata !"round.dynamic", |
| metadata !"fpexcept.strict") #0 |
| ret float %res |
| } |
| |
| attributes #0 = { strictfp } |