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;=========================== begin_copyright_notice ============================
;
; Copyright (C) 2022-2024 Intel Corporation
;
; SPDX-License-Identifier: MIT
;
;============================ end_copyright_notice =============================
; REQUIRES: llvm-14-plus, regkeys
; RUN: igc_opt --opaque-pointers -enable-debugify --regkey SetBranchSwapThreshold=10 --NanHandling -S < %s 2>&1 | FileCheck %s
; ------------------------------------------------
; NanHandling
; ------------------------------------------------
; Check that branch condition is reversed and false is shorter path
; Debug-info related check
; CHECK-NOT: WARNING
; CHECK: CheckModuleDebugify: PASS
define void @test_basic(float %a, float %b) {
; CHECK-LABEL: @test_basic(
; CHECK: entry:
; CHECK: [[TMP0:%.*]] = fcmp fast une float %a, %b
; CHECK: br i1 [[TMP0]], label %f1, label %t1
; CHECK: t1:
; CHECK: [[TMP1:%.*]] = fadd float %a, %b
; CHECK: br label %e1
; CHECK: f1:
; CHECK: [[TMP2:%.*]] = fsub float %a, %b
; CHECK: br label %f_temp
; CHECK: f_temp:
; CHECK: [[A_1:%.*]] = fcmp one float %a, %b
; CHECK: [[A_2:%.*]] = fcmp one float %a, %b
; CHECK: [[A_3:%.*]] = fcmp one float %a, %b
; CHECK: [[A_4:%.*]] = fcmp one float %a, %b
; CHECK: [[A_5:%.*]] = fcmp one float %a, %b
; CHECK: [[A_6:%.*]] = fcmp one float %a, %b
; CHECK: [[A_7:%.*]] = fcmp one float %a, %b
; CHECK: [[A_8:%.*]] = fcmp one float %a, %b
; CHECK: [[A_9:%.*]] = fcmp one float %a, %b
; CHECK: [[A_10:%.*]] = fcmp one float %a, %b
; CHECK: br label %f2
; CHECK: f2:
; CHECK: [[TMP3:%.*]] = fmul float %a, %b
; CHECK: br label %e1
; CHECK: e1:
; CHECK: [[TMP4:%.*]] = phi float [ %a, %t1 ], [ [[TMP3]], %f2 ]
; CHECK: ret void
entry:
%0 = fcmp fast oeq float %a, %b
br i1 %0, label %t1, label %f1
t1: ; preds = %entry
%1 = fadd float %a, %b
br label %e1
f1: ; preds = %entry
%2 = fsub float %a, %b
br label %f_temp
f_temp: ; preds = %f1
%a.1 = fcmp one float %a, %b
%a.2 = fcmp one float %a, %b
%a.3 = fcmp one float %a, %b
%a.4 = fcmp one float %a, %b
%a.5 = fcmp one float %a, %b
%a.6 = fcmp one float %a, %b
%a.7 = fcmp one float %a, %b
%a.8 = fcmp one float %a, %b
%a.9 = fcmp one float %a, %b
%a.10 = fcmp one float %a, %b
br label %f2
f2: ; preds = %f_temp
%3 = fmul float %a, %b
br label %e1
e1: ; preds = %f2, %t1
%4 = phi float [ %a, %t1 ], [ %3, %f2 ]
ret void
}
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