File: pr32607.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (31 lines) | stat: -rw-r--r-- 1,035 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
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=newgvn %s -S -o - | FileCheck %s
define hidden void @foo() {
; CHECK-LABEL: @foo(
; CHECK-NEXT:  top:
; CHECK-NEXT:    br label [[IF:%.*]]
; CHECK:       if:
; CHECK-NEXT:    br i1 false, label [[L50:%.*]], label [[IF]]
; CHECK:       L50:
; CHECK-NEXT:    store i8 poison, ptr null, align 1
; CHECK-NEXT:    ret void
;
top:
  %.promoted = load double, ptr undef, align 8
  br label %if

;; This is really a multi-valued phi, because the phi is defined by an expression of the phi.
;; This means that we can't propagate the value over the backedge, because we'll just cycle
;; through every value.

if:                                               ; preds = %if, %top
  %0 = phi double [ %1, %if ], [ %.promoted, %top ]
  %1 = fadd double %0, 1.0
  br i1 false, label %L50, label %if

L50:                                              ; preds = %if
  %.lcssa = phi double [ %1, %if ]
  store double %.lcssa, ptr undef, align 8
  ret void
}