File: zero-point-zero-add.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,388 kB
  • sloc: cpp: 7,438,767; ansic: 1,393,871; asm: 1,012,926; python: 241,728; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (24 lines) | stat: -rw-r--r-- 667 bytes parent folder | download | duplicates (19) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; NOTE: Assertions have been autogenerated by update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

declare double @fabs(double) readonly

define double @test(double %X) {
; CHECK-LABEL: @test(
; CHECK-NEXT:    [[Y:%.*]] = fadd double %X, 0.000000e+00
; CHECK-NEXT:    ret double [[Y]]
;
  %Y = fadd double %X, 0.0          ;; Should be a single add x, 0.0
  %Z = fadd double %Y, 0.0
  ret double %Z
}

define double @test1(double %X) {
; CHECK-LABEL: @test1(
; CHECK-NEXT:    [[Y:%.*]] = call double @llvm.fabs.f64(double %X)
; CHECK-NEXT:    ret double [[Y]]
;
  %Y = call double @fabs(double %X)
  %Z = fadd double %Y, 0.0
  ret double %Z
}