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llvm-mirror/test/CodeGen/AMDGPU/visit-physreg-vgpr-imm-folding-bug.ll
Sebastian Neubauer 0b5f33b84b Revert "[AMDGPU] Insert waitcnt after returning from call"
This reverts commit ca907bfb57d8ad3ec3bcc2cff2abab7b1b933af6.

According to michel.daenzer,
> This completely broke the Mesa radeonsi driver on Navi 14. Xorg +
> xterm come up with major corruption & psychedelic colours.
2020-09-23 17:16:39 +02:00

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778 B
LLVM

; RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 < %s | FileCheck %s
; Make sure the return value of the first call is not overwritten with
; a constant before the fadd use.
; CHECK-LABEL: vgpr_multi_use_imm_fold:
; CHECK: v_mov_b32_e32 v0, 0{{$}}
; CHECK: v_mov_b32_e32 v1, 2.0{{$}}
; CHECK: s_swappc_b64
; CHECK-NEXT: v_add_f64 v[0:1], v[0:1], 0
; CHECK: s_swappc_b64
define amdgpu_kernel void @vgpr_multi_use_imm_fold() {
entry:
store double 0.0, double addrspace(1)* undef, align 8
%call0 = tail call fastcc double @__ocml_log_f64(double 2.0)
%op = fadd double %call0, 0.0
%call1 = tail call fastcc double @__ocml_sqrt_f64(double %op)
ret void
}
declare hidden fastcc double @__ocml_log_f64(double)
declare hidden fastcc double @__ocml_sqrt_f64(double)