Files
clang-p2996/llvm/test/Transforms/StructurizeCFG/invert-condition.ll
Marek Olsak 3c5fd145c5 StructurizeCFG: fix inverting conditions
Author: Samuel Pitoiset

Without this patch, it appears to me that we are selecting
the wrong operand when inverting conditions. In the attached
test, it will select %tmp3 instead of %tmp4. To fix it, just
use 'A' as everywhere.

This fixes a regression introduced by
"[PatternMatch] define m_Not using m_Xor and cst_pred_ty"

https://reviews.llvm.org/D46351

llvm-svn: 332403
2018-05-15 21:41:55 +00:00

31 lines
1.1 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -structurizecfg %s | FileCheck %s
define void @invert_condition(i1 %arg) {
; CHECK-LABEL: @invert_condition(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = load volatile float, float addrspace(1)* undef
; CHECK-NEXT: [[TMP1:%.*]] = load volatile float, float addrspace(1)* undef
; CHECK-NEXT: br label [[BB2:%.*]]
; CHECK: bb2:
; CHECK-NEXT: [[TMP3:%.*]] = fcmp oge float [[TMP]], [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = xor i1 [[ARG:%.*]], [[TMP3]]
; CHECK-NEXT: [[TMP0:%.*]] = xor i1 [[TMP4]], true
; CHECK-NEXT: br i1 [[TMP0]], label [[BB5:%.*]], label [[BB2]]
; CHECK: bb5:
; CHECK-NEXT: ret void
;
bb:
%tmp = load volatile float, float addrspace(1)* undef
%tmp1 = load volatile float, float addrspace(1)* undef
br label %bb2
bb2: ; preds = %bb2, %bb
%tmp3 = fcmp oge float %tmp, %tmp1
%tmp4 = xor i1 %arg, %tmp3
br i1 %tmp4, label %bb2, label %bb5
bb5: ; preds = %bb2
ret void
}