| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; Test strict conversion of floating-point values to unsigned i64s (z10 only). |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s |
| |
| ; z10 doesn't have native support for unsigned fp-to-i64 conversions; |
| ; they were added in z196 as the Convert to Logical family of instructions. |
| ; Convert via signed i64s instead. |
| ; Note that the strict expansion sequence must be used. |
| |
| declare i64 @llvm.experimental.constrained.fptoui.i64.f32(float, metadata) |
| declare i64 @llvm.experimental.constrained.fptoui.i64.f64(double, metadata) |
| declare i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128, metadata) |
| |
| ; Test f32->i64. |
| define i64 @f1(float %f) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: larl %r1, .LCPI0_0 |
| ; CHECK-NEXT: le %f1, 0(%r1) |
| ; CHECK-NEXT: cebr %f0, %f1 |
| ; CHECK-NEXT: lghi %r0, 0 |
| ; CHECK-NEXT: jl .LBB0_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: sebr %f0, %f1 |
| ; CHECK-NEXT: llihh %r0, 32768 |
| ; CHECK-NEXT: .LBB0_2: |
| ; CHECK-NEXT: cgebr %r2, 5, %f0 |
| ; CHECK-NEXT: xgr %r2, %r0 |
| ; CHECK-NEXT: br %r14 |
| %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f32(float %f, |
| metadata !"fpexcept.strict") #0 |
| ret i64 %conv |
| } |
| |
| ; Test f64->i64. |
| define i64 @f2(double %f) #0 { |
| ; CHECK-LABEL: f2: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: larl %r1, .LCPI1_0 |
| ; CHECK-NEXT: ldeb %f1, 0(%r1) |
| ; CHECK-NEXT: cdbr %f0, %f1 |
| ; CHECK-NEXT: lghi %r0, 0 |
| ; CHECK-NEXT: jl .LBB1_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: sdbr %f0, %f1 |
| ; CHECK-NEXT: llihh %r0, 32768 |
| ; CHECK-NEXT: .LBB1_2: |
| ; CHECK-NEXT: cgdbr %r2, 5, %f0 |
| ; CHECK-NEXT: xgr %r2, %r0 |
| ; CHECK-NEXT: br %r14 |
| %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f64(double %f, |
| metadata !"fpexcept.strict") #0 |
| ret i64 %conv |
| } |
| |
| ; Test f128->i64. |
| define i64 @f3(fp128 *%src) #0 { |
| ; CHECK-LABEL: f3: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: ld %f0, 0(%r2) |
| ; CHECK-NEXT: ld %f2, 8(%r2) |
| ; CHECK-NEXT: larl %r1, .LCPI2_0 |
| ; CHECK-NEXT: lxeb %f1, 0(%r1) |
| ; CHECK-NEXT: cxbr %f0, %f1 |
| ; CHECK-NEXT: lghi %r0, 0 |
| ; CHECK-NEXT: jl .LBB2_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: sxbr %f0, %f1 |
| ; CHECK-NEXT: llihh %r0, 32768 |
| ; CHECK-NEXT: .LBB2_2: |
| ; CHECK-NEXT: cgxbr %r2, 5, %f0 |
| ; CHECK-NEXT: xgr %r2, %r0 |
| ; CHECK-NEXT: br %r14 |
| %f = load fp128, fp128 *%src |
| %conv = call i64 @llvm.experimental.constrained.fptoui.i64.f128(fp128 %f, |
| metadata !"fpexcept.strict") #0 |
| ret i64 %conv |
| } |
| |
| attributes #0 = { strictfp } |