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TheRock/compiler/amd-llvm/llvm/test/Transforms/NewGVN/2010-03-31-RedundantPHIs.ll
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71 lines
2.3 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
; RUN: opt < %s -passes=newgvn -S | FileCheck %s
; CHECK-NOT: load
; CHECK-NOT: phi
define ptr @cat(ptr %s1, i1 %arg, i1 %arg2, i1 %arg3, ...) nounwind {
; CHECK-LABEL: define ptr @cat(
; CHECK-SAME: ptr [[S1:%.*]], i1 [[ARG:%.*]], i1 [[ARG2:%.*]], i1 [[ARG3:%.*]], ...) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[ARG2]], label [[BB:%.*]], label [[BB3:%.*]]
; CHECK: bb:
; CHECK-NEXT: unreachable
; CHECK: bb3:
; CHECK-NEXT: store ptr undef, ptr undef, align 4
; CHECK-NEXT: br i1 [[ARG3]], label [[BB5:%.*]], label [[BB6:%.*]]
; CHECK: bb5:
; CHECK-NEXT: unreachable
; CHECK: bb6:
; CHECK-NEXT: br label [[BB12:%.*]]
; CHECK: bb8:
; CHECK-NEXT: br i1 true, label [[BB9:%.*]], label [[BB10:%.*]]
; CHECK: bb9:
; CHECK-NEXT: br label [[BB11:%.*]]
; CHECK: bb10:
; CHECK-NEXT: store i8 poison, ptr null, align 1
; CHECK-NEXT: br label [[BB11]]
; CHECK: bb11:
; CHECK-NEXT: br label [[BB12]]
; CHECK: bb12:
; CHECK-NEXT: br i1 [[ARG]], label [[BB8:%.*]], label [[BB13:%.*]]
; CHECK: bb13:
; CHECK-NEXT: ret ptr undef
;
entry:
br i1 %arg2, label %bb, label %bb3
bb: ; preds = %entry
unreachable
bb3: ; preds = %entry
store ptr undef, ptr undef, align 4
br i1 %arg3, label %bb5, label %bb6
bb5: ; preds = %bb3
unreachable
bb6: ; preds = %bb3
br label %bb12
bb8: ; preds = %bb12
br i1 %arg, label %bb9, label %bb10
bb9: ; preds = %bb8
%0 = load ptr, ptr undef, align 4 ; <ptr> [#uses=0]
%1 = load ptr, ptr undef, align 4 ; <ptr> [#uses=0]
br label %bb11
bb10: ; preds = %bb8
br label %bb11
bb11: ; preds = %bb10, %bb9
br label %bb12
bb12: ; preds = %bb11, %bb6
br i1 %arg, label %bb8, label %bb13
bb13: ; preds = %bb12
ret ptr undef
}