File: fp-int128-fp-combine.ll

package info (click to toggle)
llvm-toolchain-14 1%3A14.0.6-12
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,496,180 kB
  • sloc: cpp: 5,593,972; ansic: 986,872; asm: 585,869; python: 184,223; objc: 72,530; lisp: 31,119; f90: 27,793; javascript: 9,780; pascal: 9,762; sh: 9,482; perl: 7,468; ml: 5,432; awk: 3,523; makefile: 2,538; xml: 953; cs: 573; fortran: 567
file content (41 lines) | stat: -rw-r--r-- 1,130 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -O0 -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s

; xscvdpsxds should NOT be emitted, since it saturates the result down to i64.
; We can't use friz here because it may return -0.0 where the original code doesn't.

define float @f_i128_f(float %v) nounwind {
; CHECK-LABEL: f_i128_f:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    mflr 0
; CHECK-NEXT:    std 0, 16(1)
; CHECK-NEXT:    stdu 1, -32(1)
; CHECK-NEXT:    bl __fixsfti
; CHECK-NEXT:    nop
; CHECK-NEXT:    bl __floattisf
; CHECK-NEXT:    nop
; CHECK-NEXT:    addi 1, 1, 32
; CHECK-NEXT:    ld 0, 16(1)
; CHECK-NEXT:    mtlr 0
; CHECK-NEXT:    blr
entry:
  %a = fptosi float %v to i128
  %b = sitofp i128 %a to float
  ret float %b
}

; NSZ, so it's safe to friz.

define float @f_i128_fi_nsz(float %v) #0 {
; CHECK-LABEL: f_i128_fi_nsz:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    xsrdpiz 1, 1
; CHECK-NEXT:    blr
entry:
  %a = fptosi float %v to i128
  %b = sitofp i128 %a to float
  ret float %b
}

attributes #0 = { "no-signed-zeros-fp-math"="true" }