File: uniform-branch-intrinsic-cond.ll

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm-proposed-updates
  • size: 1,998,492 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 (27 lines) | stat: -rw-r--r-- 907 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
 
; RUN: llc -mtriple=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck %s

; This used to raise an assertion due to how the choice between uniform and
; non-uniform branches was determined.
;
; CHECK-LABEL: {{^}}main:
; CHECK: s_cbranch_vccnz
define amdgpu_ps float @main(ptr addrspace(8) inreg %rsrc) {
main_body:
  %v = call float @llvm.amdgcn.raw.ptr.buffer.load.f32(ptr addrspace(8) %rsrc, i32 0, i32 0, i32 1)
  %cc = fcmp une float %v, 1.000000e+00
  br i1 %cc, label %if, label %else

if:
  %u = fadd float %v, %v
  call void asm sideeffect "", ""() #0 ; Prevent ifconversion
  br label %else

else:
  %r = phi float [ %v, %main_body ], [ %u, %if ]
  ret float %r
}

declare float @llvm.amdgcn.raw.ptr.buffer.load.f32(ptr addrspace(8), i32, i32, i32 immarg) #0

attributes #0 = { nounwind memory(argmem: read) }