File: setcc-multiple-use.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; 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 (29 lines) | stat: -rw-r--r-- 1,011 bytes parent folder | download | duplicates (10) 
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
 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=amdgcn -mcpu=gfx1030 < %s | FileCheck %s

; SelectionDAG generates a setcc node with multiple uses:
;
;  t21: i1 = setcc t3, Constant:i32<0>, setne:ch
;      t15: i32,i1 = subcarry Constant:i32<1>, Constant:i32<0>, t21
;    t23: i32 = select t21, t15, Constant:i32<0>

define i32 @f() {
; CHECK-LABEL: f:
; CHECK:       ; %bb.0: ; %bb
; CHECK-NEXT:    s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
; CHECK-NEXT:    v_mov_b32_e32 v0, 0
; CHECK-NEXT:    ds_read_b32 v0, v0
; CHECK-NEXT:    s_waitcnt lgkmcnt(0)
; CHECK-NEXT:    v_cmp_eq_u32_e32 vcc_lo, 0, v0
; CHECK-NEXT:    v_cndmask_b32_e64 v1, 0, 1, vcc_lo
; CHECK-NEXT:    v_cmp_ne_u32_e32 vcc_lo, 0, v0
; CHECK-NEXT:    v_cndmask_b32_e32 v0, 0, v1, vcc_lo
; CHECK-NEXT:    s_setpc_b64 s[30:31]
bb:
  %i = load i32, ptr addrspace(3) null, align 16
  %i6 = icmp ult i32 0, %i
  %i7 = sext i1 %i6 to i32
  %i8 = add i32 %i7, 1
  %i9 = and i32 %i8, %i7
  ret i32 %i9
}