| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; Test strict conversion of floating-point values to unsigned i32s (z10 only). |
| ; |
| ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s |
| |
| ; z10 doesn't have native support for unsigned fp-to-i32 conversions; |
| ; they were added in z196 as the Convert to Logical family of instructions. |
| ; Promoting to i64 doesn't generate an inexact condition for values that are |
| ; outside the i32 range but in the i64 range, so use the default expansion. |
| ; Note that the strict expansion sequence must be used. |
| |
| declare i32 @llvm.experimental.constrained.fptoui.i32.f32(float, metadata) |
| declare i32 @llvm.experimental.constrained.fptoui.i32.f64(double, metadata) |
| declare i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128, metadata) |
| |
| ; Test f32->i32. |
| define i32 @f1(float %f) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: larl %r1, .LCPI0_0 |
| ; CHECK-NEXT: le %f1, 0(%r1) |
| ; CHECK-NEXT: kebr %f0, %f1 |
| ; CHECK-NEXT: jnl .LBB0_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: lhi %r0, 0 |
| ; CHECK-NEXT: lzer %f1 |
| ; CHECK-NEXT: j .LBB0_3 |
| ; CHECK-NEXT: .LBB0_2: |
| ; CHECK-NEXT: llilh %r0, 32768 |
| ; CHECK-NEXT: .LBB0_3: |
| ; CHECK-NEXT: sebr %f0, %f1 |
| ; CHECK-NEXT: cfebr %r2, 5, %f0 |
| ; CHECK-NEXT: xr %r2, %r0 |
| ; CHECK-NEXT: br %r14 |
| %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f32(float %f, |
| metadata !"fpexcept.strict") #0 |
| ret i32 %conv |
| } |
| |
| ; Test f64->i32. |
| define i32 @f2(double %f) #0 { |
| ; CHECK-LABEL: f2: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: larl %r1, .LCPI1_0 |
| ; CHECK-NEXT: ld %f1, 0(%r1) |
| ; CHECK-NEXT: kdbr %f0, %f1 |
| ; CHECK-NEXT: jnl .LBB1_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: lhi %r0, 0 |
| ; CHECK-NEXT: lzdr %f1 |
| ; CHECK-NEXT: j .LBB1_3 |
| ; CHECK-NEXT: .LBB1_2: |
| ; CHECK-NEXT: llilh %r0, 32768 |
| ; CHECK-NEXT: .LBB1_3: |
| ; CHECK-NEXT: sdbr %f0, %f1 |
| ; CHECK-NEXT: cfdbr %r2, 5, %f0 |
| ; CHECK-NEXT: xr %r2, %r0 |
| ; CHECK-NEXT: br %r14 |
| %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f64(double %f, |
| metadata !"fpexcept.strict") #0 |
| ret i32 %conv |
| } |
| |
| ; Test f128->i32. |
| define i32 @f3(ptr %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: kxbr %f0, %f1 |
| ; CHECK-NEXT: jnl .LBB2_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: lhi %r0, 0 |
| ; CHECK-NEXT: lzxr %f1 |
| ; CHECK-NEXT: j .LBB2_3 |
| ; CHECK-NEXT: .LBB2_2: |
| ; CHECK-NEXT: llilh %r0, 32768 |
| ; CHECK-NEXT: .LBB2_3: |
| ; CHECK-NEXT: sxbr %f0, %f1 |
| ; CHECK-NEXT: cfxbr %r2, 5, %f0 |
| ; CHECK-NEXT: xr %r2, %r0 |
| ; CHECK-NEXT: br %r14 |
| %f = load fp128, ptr %src |
| %conv = call i32 @llvm.experimental.constrained.fptoui.i32.f128(fp128 %f, |
| metadata !"fpexcept.strict") #0 |
| ret i32 %conv |
| } |
| |
| attributes #0 = { strictfp } |