File: constant-fold-libfunc.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (31 lines) | stat: -rw-r--r-- 905 bytes parent folder | download | duplicates (2) 
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
 
; RUN: opt < %s -instcombine -S | FileCheck %s

declare double @acos(double)

; Check that functions without any function attributes are simplified.

define double @test_simplify_acos() {
; CHECK-LABEL: @test_simplify_acos
  %pi = call double @acos(double -1.000000e+00)
; CHECK-NOT: call double @acos
; CHECK: ret double 0x400921FB54442D18
  ret double %pi
}

; Check that we don't constant fold builtin functions.

define double @test_acos_nobuiltin() {
; CHECK-LABEL: @test_acos_nobuiltin
  %pi = call double @acos(double -1.000000e+00) nobuiltin 
; CHECK: call double @acos(double -1.000000e+00)
  ret double %pi
}

; Check that we don't constant fold strictfp results that require rounding.

define double @test_acos_strictfp() strictfp {
; CHECK-LABEL: @test_acos_strictfp
  %pi = call double @acos(double -1.000000e+00) strictfp 
; CHECK: call double @acos(double -1.000000e+00)
  ret double %pi
}